{"id":37725,"date":"2026-01-08T09:51:44","date_gmt":"2026-01-08T02:51:44","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=37725"},"modified":"2026-02-10T13:24:51","modified_gmt":"2026-02-10T06:24:51","slug":"caa-record-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/","title":{"rendered":"CAA Record l\u00e0 g\u00ec? C\u00e1ch ho\u1ea1t \u0111\u1ed9ng, L\u1ee3i \u00edch \u0111\u1ebfn c\u00e1ch c\u1ea5u h\u00ecnh"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#CAA-Record-la-gi\" >CAA Record l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#CAA-Record-hoat-dong-nhu-the-nao-trong-DNS\" >CAA Record ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o trong DNS?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Them-CAA-Record-vao-ten-mien\" >Th\u00eam CAA Record v\u00e0o t\u00ean mi\u1ec1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Cach-CAA-Record-kiem-soat-viec-phat-hanh-chung-chi-SSL\" >C\u00e1ch CAA Record ki\u1ec3m so\u00e1t vi\u1ec7c ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Tai-sao-Website-can-co-ban-ghi-CAA\" >T\u1ea1i sao Website c\u1ea7n c\u00f3 b\u1ea3n ghi CAA?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Tang-muc-do-bao-mat-cho-website\" >T\u0103ng m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cho website<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Ngan-chan-hacker-hoac-ke-gian-dang-ky-SSL-trai-phep\" >Ng\u0103n ch\u1eb7n hacker ho\u1eb7c k\u1ebb gian \u0111\u0103ng k\u00fd SSL tr\u00e1i ph\u00e9p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Tuan-thu-quy-dinh-quoc-te\" >Tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh qu\u1ed1c t\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Giai-quyet-su-co-khong-kich-hoat-duoc-SSL\" >Gi\u1ea3i quy\u1ebft s\u1ef1 c\u1ed1 kh\u00f4ng k\u00edch ho\u1ea1t \u0111\u01b0\u1ee3c SSL<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Co-bat-buoc-phai-tao-CAA-Record-khong\" >C\u00f3 b\u1eaft bu\u1ed9c ph\u1ea3i t\u1ea1o CAA Record kh\u00f4ng?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Truong-hop-chua-can-thiet\" >Tr\u01b0\u1eddng h\u1ee3p ch\u01b0a c\u1ea7n thi\u1ebft<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Truong-hop-nen-dung-va-bat-buoc-dung\" >Tr\u01b0\u1eddng h\u1ee3p n\u00ean d\u00f9ng v\u00e0 b\u1eaft bu\u1ed9c d\u00f9ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Cau-truc-ky-thuat-cua-mot-ban-ghi-CAA\" >C\u1ea5u tr\u00fac k\u1ef9 thu\u1eadt c\u1ee7a m\u1ed9t b\u1ea3n ghi CAA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Khong-co-hoac-cau-hinh-sai-CAA-Record-co-anh-huong-gi\" >Kh\u00f4ng c\u00f3 ho\u1eb7c c\u1ea5u h\u00ecnh sai CAA Record c\u00f3 \u1ea3nh h\u01b0\u1edfng g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#SSL-khong-duoc-cap-Issuance-Failed\" >SSL kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p (Issuance Failed)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Website-bi-gian-doan-HTTPS-khi-gia-han\" >Website b\u1ecb gi\u00e1n \u0111o\u1ea1n HTTPS khi gia h\u1ea1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Mat-di-quyen-kiem-soat\" >M\u1ea5t \u0111i quy\u1ec1n ki\u1ec3m so\u00e1t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Danh-sach-Value-CAA-cua-cac-nha-cung-cap-SSL-pho-bien\" >Danh s\u00e1ch Value CAA c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p SSL ph\u1ed5 bi\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Vi-du-CAA-Record-thuc-te-de-hieu-cho-nguoi-moi\" >V\u00ed d\u1ee5 CAA Record th\u1ef1c t\u1ebf (d\u1ec5 hi\u1ec3u cho ng\u01b0\u1eddi m\u1edbi)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Khi-nao-ban-nen-nho-don-vi-hosting-ho-tro-CAA-Record\" >Khi n\u00e0o b\u1ea1n n\u00ean nh\u1edd \u0111\u01a1n v\u1ecb hosting h\u1ed7 tr\u1ee3 CAA Record?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Huong-dan-tao-CAA-Record-trong-DNS-tung-buoc\" >H\u01b0\u1edbng d\u1eabn t\u1ea1o CAA Record trong DNS t\u1eebng b\u01b0\u1edbc<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Buoc-1-Xac-dinh-cac-thong-tin-can-chuan-bi\" >B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng tin c\u1ea7n chu\u1ea9n b\u1ecb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Buoc-2-Truy-cap-vao-trang-quan-ly-DNS\" >B\u01b0\u1edbc 2: Truy c\u1eadp v\u00e0o trang qu\u1ea3n l\u00fd DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Buoc-3-Them-ban-ghi-CAA\" >B\u01b0\u1edbc 3: Th\u00eam b\u1ea3n ghi CAA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Buoc-4-Luu-cau-hinh-va-kiem-tra\" >B\u01b0\u1edbc 4: L\u01b0u c\u1ea5u h\u00ecnh v\u00e0 ki\u1ec3m tra<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Cach-chinh-sua-hoac-xoa-ban-ghi-CAA-hien-co\" >C\u00e1ch ch\u1ec9nh s\u1eeda ho\u1eb7c x\u00f3a b\u1ea3n ghi CAA hi\u1ec7n c\u00f3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Cach-chinh-sua-ban-ghi-CAA\" >C\u00e1ch ch\u1ec9nh s\u1eeda b\u1ea3n ghi CAA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Cach-xoa-ban-ghi-CAA\" >C\u00e1ch x\u00f3a b\u1ea3n ghi CAA<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/#Ket-luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<p>Khi tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL cho website, kh\u00f4ng \u00edt ng\u01b0\u1eddi g\u1eb7p t\u00ecnh hu\u1ed1ng c\u1ea5u h\u00ecnh xong nh\u01b0ng v\u1eabn ph\u00e1t sinh l\u1ed7i, ho\u1eb7c nh\u00e0 cung c\u1ea5p SSL y\u00eau c\u1ea7u ki\u1ec3m tra th\u00eam m\u1ed9t th\u00e0nh ph\u1ea7n c\u00f3 t\u00ean CAA Record. V\u1eady <a href=\"https:\/\/interdata.vn\/blog\/caa-record-la-gi\/\"><strong>CAA Record l\u00e0 g\u00ec<\/strong><\/a>, b\u1ea3n ghi n\u00e0y c\u00f3 vai tr\u00f2 g\u00ec trong h\u1ec7 th\u1ed1ng DNS v\u00e0 v\u00ec sao ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c nh\u1eafc \u0111\u1ebfn nhi\u1ec1u trong c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn b\u1ea3o m\u1eadt website?<\/p>\n<p>C\u00f9ng InterData t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 b\u1ea3n ghi CA, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng ra sao, nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00ean ho\u1eb7c kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng v\u00e0 h\u01b0\u1edbng d\u1eabn b\u1ea1n t\u1eebng b\u01b0\u1edbc c\u1ea5u h\u00ecnh b\u1ea3n ghi CAA \u0111\u1ec3 website v\u1eadn h\u00e0nh tr\u01a1n tru, gi\u00fap b\u1ea3o v\u1ec7 th\u01b0\u01a1ng hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o website ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CAA-Record-la-gi\"><\/span>CAA Record l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>CAA Record &#8211; Certification Authority Authorization<\/strong> (t\u1ea1m d\u1ecbch: \u1ee6y quy\u1ec1n cho nh\u00e0 cung c\u1ea5p ch\u1ee9ng th\u1ef1c) &#8211; l\u00e0 m\u1ed9t lo\u1ea1i b\u1ea3n ghi trong h\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n (DNS), cho ph\u00e9p ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n ch\u1ec9 \u0111\u1ecbnh r\u00f5 r\u00e0ng T\u1ed5 ch\u1ee9c c\u1ea5p ph\u00e1t ch\u1ee9ng ch\u1ec9 (Certificate Authority &#8211; CA) n\u00e0o \u0111\u01b0\u1ee3c ph\u00e9p c\u1ea5p SSL cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n<p><strong>V\u00ed d\u1ee5 minh h\u1ecda d\u1ec5 hi\u1ec3u:\u00a0 <\/strong>\u0110\u1ec3 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean v\u1ec1 k\u1ef9 thu\u1eadt d\u1ec5 h\u00ecnh dung\u00a0CAA Record l\u00e0 g\u00ec, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n l\u00e0 ch\u1ee7 m\u1ed9t ng\u00f4i nh\u00e0 (t\u00ean mi\u1ec1n). B\u1ea1n mu\u1ed1n thu\u00ea d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 (ch\u1ee9ng ch\u1ec9 SSL).<\/p>\n<p>B\u1ea3n ghi CAA gi\u1ed1ng nh\u01b0 m\u1ed9t t\u1edd gi\u1ea5y d\u00e1n tr\u01b0\u1edbc c\u1ed5ng nh\u00e0 ghi r\u00f5:\u00a0&#8220;Ch\u1ec9 c\u00f3 c\u00f4ng ty b\u1ea3o v\u1ec7 A m\u1edbi \u0111\u01b0\u1ee3c ph\u00e9p l\u00e0m vi\u1ec7c t\u1ea1i \u0111\u00e2y&#8221;. N\u1ebfu nh\u00e2n vi\u00ean c\u1ee7a c\u00f4ng ty b\u1ea3o v\u1ec7 B \u0111\u1ebfn, h\u1ecd nh\u00ecn th\u1ea5y t\u1edd gi\u1ea5y n\u00e0y v\u00e0 s\u1ebd t\u1ef1 \u0111\u1ed9ng r\u1eddi \u0111i v\u00ec bi\u1ebft m\u00ecnh kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n. \u0110i\u1ec1u n\u00e0y ng\u0103n ch\u1eb7n vi\u1ec7c nh\u1eefng ng\u01b0\u1eddi kh\u00f4ng ph\u1eadn s\u1ef1 nh\u1eadn v\u01a1 l\u00e0 b\u1ea3o v\u1ec7 cho ng\u00f4i nh\u00e0 c\u1ee7a b\u1ea1n.<\/p>\n<figure id=\"attachment_37727\" aria-describedby=\"caption-attachment-37727\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-37727\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/CAA-Record-la-gi.jpg\" alt=\"CAA Record l\u00e0 g\u00ec\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/CAA-Record-la-gi.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/CAA-Record-la-gi-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/CAA-Record-la-gi-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-37727\" class=\"wp-caption-text\">CAA Record l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"CAA-Record-hoat-dong-nhu-the-nao-trong-DNS\"><\/span>CAA Record ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o trong DNS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Them-CAA-Record-vao-ten-mien\"><\/span>Th\u00eam CAA Record v\u00e0o t\u00ean mi\u1ec1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 s\u1eed d\u1ee5ng CAA Record cho m\u1ed9t t\u00ean mi\u1ec1n, qu\u1ea3n tr\u1ecb vi\u00ean c\u1ea7n th\u1ef1c hi\u1ec7n ch\u1ec9nh s\u1eeda trong h\u1ec7 th\u1ed1ng b\u1ea3n ghi DNS c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3. DNS l\u00e0 n\u01a1i l\u01b0u tr\u1eef c\u00e1c th\u00f4ng tin quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn t\u00ean mi\u1ec1n, v\u00e0 CAA Record c\u0169ng l\u00e0 m\u1ed9t ph\u1ea7n trong h\u1ec7 th\u1ed1ng n\u00e0y.<\/p>\n<p>Khi thi\u1ebft l\u1eadp CAA Record, qu\u1ea3n tr\u1ecb vi\u00ean s\u1ebd khai b\u00e1o th\u00f4ng tin x\u00e1c th\u1ef1c v\u1ec1 ngu\u1ed3n \u0111\u01b0\u1ee3c ph\u00e9p ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00ean c\u00f4ng ty ho\u1eb7c t\u1ed5 ch\u1ee9c cung c\u1ea5p ch\u1ee9ng ch\u1ec9. Ngo\u00e0i ra, b\u1ea3n ghi CAA c\u00f2n cho ph\u00e9p ch\u1ec9 \u0111\u1ecbnh r\u00f5 nh\u1eefng nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL \u0111\u01b0\u1ee3c ch\u1ea5p thu\u1eadn. Vi\u1ec7c n\u00e0y gi\u00fap gi\u1edbi h\u1ea1n quy\u1ec1n c\u1ea5p SSL, ng\u0103n ch\u1eb7n c\u00e1c ngu\u1ed3n kh\u00f4ng \u0111\u00e1ng tin c\u1eady v\u00e0 g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7 t\u00ean mi\u1ec1n tr\u01b0\u1edbc c\u00e1c r\u1ee7i ro b\u1ea3o m\u1eadt.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach-CAA-Record-kiem-soat-viec-phat-hanh-chung-chi-SSL\"><\/span>C\u00e1ch CAA Record ki\u1ec3m so\u00e1t vi\u1ec7c ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi tr\u00ecnh duy\u1ec7t ho\u1eb7c m\u00e1y ch\u1ee7 g\u1eedi y\u00eau c\u1ea7u c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL cho m\u1ed9t t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3, h\u1ec7 th\u1ed1ng s\u1ebd ki\u1ec3m tra b\u1ea3n ghi CAA c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01a1n v\u1ecb n\u00e0o \u0111\u01b0\u1ee3c ph\u00e9p ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL.<\/p>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p t\u00ean mi\u1ec1n kh\u00f4ng c\u00f3 CAA Record ho\u1eb7c b\u1ea3n ghi n\u00e0y kh\u00f4ng ch\u1ee9a th\u00f4ng tin li\u00ean quan, b\u1ea5t k\u1ef3 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL n\u00e0o c\u0169ng c\u00f3 th\u1ec3 c\u1ea5p ch\u1ee9ng ch\u1ec9 cho t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu CAA Record \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh r\u00f5 r\u00e0ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh ngu\u1ed3n ph\u00e1t h\u00e0nh ho\u1eb7c nh\u00e0 cung c\u1ea5p c\u1ee5 th\u1ec3, th\u00ec ch\u1ec9 nh\u1eefng t\u1ed5 ch\u1ee9c \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n trong b\u1ea3n ghi n\u00e0y m\u1edbi c\u00f3 quy\u1ec1n ph\u00e1t h\u00e0nh ch\u1ee9ng ch\u1ec9 SSL cho t\u00ean mi\u1ec1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-Website-can-co-ban-ghi-CAA\"><\/span>T\u1ea1i sao Website c\u1ea7n c\u00f3 b\u1ea3n ghi CAA?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c hi\u1ec3u <strong>CAA Record l\u00e0 g\u00ec<\/strong> m\u1edbi ch\u1ec9 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u, \u0111i\u1ec1u quan tr\u1ecdng h\u01a1n l\u00e0 hi\u1ec3u t\u1ea1i sao website c\u1ee7a b\u1ea1n c\u1ea7n n\u00f3 ngay b\u00e2y gi\u1edd. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u00fd do d\u1ef1a tr\u00ean th\u1ef1c t\u1ebf v\u1eadn h\u00e0nh website:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-muc-do-bao-mat-cho-website\"><\/span>T\u0103ng m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cho website<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ee5c ti\u00eau c\u1ed1t l\u00f5i c\u1ee7a CAA l\u00e0 gi\u1edbi h\u1ea1n ph\u1ea1m vi c\u1ea5p ph\u00e1t. N\u1ebfu b\u1ea1n ch\u1ec9 mua SSL c\u1ee7a Sectigo, b\u1ea1n kh\u00f4ng mu\u1ed1n m\u1ed9t ng\u00e0y n\u00e0o \u0111\u00f3 th\u1ea5y t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh \u0111ang s\u1eed d\u1ee5ng SSL c\u1ee7a m\u1ed9t \u0111\u01a1n v\u1ecb l\u1ea1 ho\u1eafc n\u00e0o \u0111\u00f3 do hacker \u0111\u0103ng k\u00fd. B\u1ea3n ghi CAA gi\u00fap b\u1ea1n ki\u1ec3m so\u00e1t ho\u00e0n to\u00e0n quy\u1ec1n c\u1ea5p ph\u00e1t n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ngan-chan-hacker-hoac-ke-gian-dang-ky-SSL-trai-phep\"><\/span>Ng\u0103n ch\u1eb7n hacker ho\u1eb7c k\u1ebb gian \u0111\u0103ng k\u00fd SSL tr\u00e1i ph\u00e9p<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong th\u1ebf gi\u1edbi Internet, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng &#8220;Man-in-the-Middle&#8221; (Ng\u01b0\u1eddi \u0111\u1ee9ng gi\u1eefa) th\u01b0\u1eddng l\u1ee3i d\u1ee5ng vi\u1ec7c c\u1ea5p ph\u00e1t sai ch\u1ee9ng ch\u1ec9 \u0111\u1ec3 \u0111\u00e1nh l\u1eeba ng\u01b0\u1eddi d\u00f9ng. K\u1ebb gian c\u00f3 th\u1ec3 c\u1ed1 g\u1eafng xin c\u1ea5p m\u1ed9t ch\u1ee9ng ch\u1ec9 SSL h\u1ee3p l\u1ec7 cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n t\u1eeb m\u1ed9t CA l\u1ecfng l\u1ebbo n\u00e0o \u0111\u00f3. N\u1ebfu b\u1ea1n \u0111\u00e3 c\u1ea5u h\u00ecnh CAA ch\u1ec9 \u0111\u1ecbnh r\u00f5 ch\u1ec9 d\u00f9ng GlobalSign, th\u00ec n\u1ed7 l\u1ef1c xin c\u1ea5p t\u1eeb c\u00e1c CA kh\u00e1c c\u1ee7a hacker s\u1ebd tr\u1edf n\u00ean v\u00f4 ngh\u0129a.<\/p>\n<figure id=\"attachment_37728\" aria-describedby=\"caption-attachment-37728\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-37728\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Tam-quan-trong-cua-ban-ghi-CAA-voi-Website.jpg\" alt=\"T\u1ea7m quan tr\u1ecdng c\u1ee7a b\u1ea3n ghi CAA v\u1edbi Website\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Tam-quan-trong-cua-ban-ghi-CAA-voi-Website.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Tam-quan-trong-cua-ban-ghi-CAA-voi-Website-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Tam-quan-trong-cua-ban-ghi-CAA-voi-Website-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-37728\" class=\"wp-caption-text\">T\u1ea7m quan tr\u1ecdng c\u1ee7a b\u1ea3n ghi CAA v\u1edbi Website<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tuan-thu-quy-dinh-quoc-te\"><\/span>Tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh qu\u1ed1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u1eeb th\u00e1ng 9 n\u0103m 2017, Di\u1ec5n \u0111\u00e0n CA\/Browser (t\u1ed5 ch\u1ee9c qu\u1ea3n l\u00fd c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 ch\u1ee9ng ch\u1ec9 s\u1ed1 v\u00e0 tr\u00ecnh duy\u1ec7t web) \u0111\u00e3 b\u1ecf phi\u1ebfu th\u00f4ng qua quy \u0111\u1ecbnh b\u1eaft bu\u1ed9c. Theo \u0111\u00f3, t\u1ea5t c\u1ea3 c\u00e1c CA b\u1eaft bu\u1ed9c ph\u1ea3i ki\u1ec3m tra CAA tr\u01b0\u1edbc khi c\u1ea5p SSL, kh\u00f4ng ph\u1ea3i website b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 CAA. \u0110\u00e2y kh\u00f4ng c\u00f2n l\u00e0 t\u00ednh n\u0103ng t\u00f9y ch\u1ecdn \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p SSL n\u1eefa, m\u00e0 l\u00e0 quy tr\u00ecnh b\u1eaft bu\u1ed9c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Giai-quyet-su-co-khong-kich-hoat-duoc-SSL\"><\/span>Gi\u1ea3i quy\u1ebft s\u1ef1 c\u1ed1 kh\u00f4ng k\u00edch ho\u1ea1t \u0111\u01b0\u1ee3c SSL<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 l\u00fd do th\u1ef1c t\u1ebf nh\u1ea5t m\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng g\u1eb7p. R\u1ea5t nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p kh\u00e1ch h\u00e0ng mua SSL tr\u1ea3 ph\u00ed nh\u01b0ng m\u00e3i kh\u00f4ng th\u1ea5y tr\u1ea1ng th\u00e1i &#8220;Active&#8221;. Khi ki\u1ec3m tra k\u1ef9 thu\u1eadt, nguy\u00ean nh\u00e2n th\u01b0\u1eddng do tr\u00ean DNS \u0111ang t\u1ed3n t\u1ea1i m\u1ed9t b\u1ea3n ghi CAA c\u0169 (tr\u1ecf v\u1ec1 m\u1ed9t nh\u00e0 cung c\u1ea5p kh\u00e1c) ho\u1eb7c c\u1ea5u h\u00ecnh sai, khi\u1ebfn nh\u00e0 cung c\u1ea5p m\u1edbi kh\u00f4ng th\u1ec3 c\u1ea5p ch\u1ee9ng ch\u1ec9.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Co-bat-buoc-phai-tao-CAA-Record-khong\"><\/span>C\u00f3 b\u1eaft bu\u1ed9c ph\u1ea3i t\u1ea1o CAA Record kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00e2u h\u1ecfi n\u00e0y th\u01b0\u1eddng xuy\u00ean xu\u1ea5t hi\u1ec7n khi ng\u01b0\u1eddi d\u00f9ng t\u00ecm hi\u1ec3u v\u1ec1 b\u1ea3n ghi <strong>CAA<\/strong>. C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn l\u00e0: <strong>Kh\u00f4ng b\u1eaft bu\u1ed9c, nh\u01b0ng c\u1ef1c k\u1ef3 khuy\u1ebfn kh\u00edch.<\/strong><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Truong-hop-chua-can-thiet\"><\/span>Tr\u01b0\u1eddng h\u1ee3p ch\u01b0a c\u1ea7n thi\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n \u0111ang v\u1eadn h\u00e0nh m\u1ed9t blog c\u00e1 nh\u00e2n nh\u1ecf, s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 SSL mi\u1ec5n ph\u00ed t\u1ef1 \u0111\u1ed9ng (nh\u01b0 AutoSSL c\u1ee7a cPanel hay Universal SSL c\u1ee7a Cloudflare) v\u00e0 kh\u00f4ng qu\u00e1 lo l\u1eafng v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng gi\u1ea3 m\u1ea1o tinh vi, b\u1ea1n c\u00f3 th\u1ec3 ch\u01b0a c\u1ea7n quan t\u00e2m \u0111\u1ebfn b\u1ea3n ghi n\u00e0y. H\u1ec7 th\u1ed1ng v\u1eabn s\u1ebd ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng n\u1ebfu kh\u00f4ng c\u00f3 b\u1ea3n ghi CAA (nh\u01b0 \u0111\u00e3 gi\u1ea3i th\u00edch \u1edf Tr\u01b0\u1eddng h\u1ee3p 1 ph\u1ea7n c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Truong-hop-nen-dung-va-bat-buoc-dung\"><\/span>Tr\u01b0\u1eddng h\u1ee3p n\u00ean d\u00f9ng v\u00e0 b\u1eaft bu\u1ed9c d\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng sau, vi\u1ec7c c\u1ea5u h\u00ecnh CAA g\u1ea7n nh\u01b0 l\u00e0 y\u00eau c\u1ea7u chu\u1ea9n m\u1ef1c:<\/p>\n<ul>\n<li><strong>Doanh nghi\u1ec7p v\u00e0 Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed:<\/strong> C\u00e1c website giao d\u1ecbch t\u00e0i ch\u00ednh, ch\u1ee9a th\u00f4ng tin kh\u00e1ch h\u00e0ng c\u1ea7n s\u1ef1 b\u1ea3o m\u1eadt cao nh\u1ea5t.<\/li>\n<li><strong>T\u1ed5 ch\u1ee9c ch\u00ednh ph\u1ee7 ho\u1eb7c t\u00e0i ch\u00ednh:<\/strong> N\u01a1i uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u l\u00e0 s\u1ed1ng c\u00f2n.<\/li>\n<li><strong>Ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng SSL tr\u1ea3 ph\u00ed cao c\u1ea5p (OV, EV):<\/strong> \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ed1 ti\u1ec1n b\u1ea1n b\u1ecf ra mua b\u1ea3o m\u1eadt kh\u00f4ng b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a b\u1edfi m\u1ed9t ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed n\u00e0o \u0111\u00f3.<\/li>\n<\/ul>\n<p>Hi\u1ec3u r\u00f5 <strong>CAA Record l\u00e0 g\u00ec<\/strong> gi\u00fap b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn cho quy m\u00f4 website c\u1ee7a m\u00ecnh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-truc-ky-thuat-cua-mot-ban-ghi-CAA\"><\/span>C\u1ea5u tr\u00fac k\u1ef9 thu\u1eadt c\u1ee7a m\u1ed9t b\u1ea3n ghi CAA<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c, b\u1ea1n c\u1ea7n n\u1eafm v\u1eefng c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. M\u1ed9t b\u1ea3n ghi CAA chu\u1ea9n bao g\u1ed3m 3 th\u00e0nh ph\u1ea7n ch\u00ednh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch chi ti\u1ebft:<\/p>\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, sans-serif; font-size: 14px; line-height: 1.6; margin: 24px 0; box-shadow: 0 6px 18px rgba(12,64,244,0.15); border-radius: 10px; overflow: hidden;\">\n<thead>\n<tr style=\"background: linear-gradient(90deg, #0C40F4, #077FFA, #0497FC); color: #ffffff;\">\n<th style=\"padding: 14px 16px; text-align: left; font-weight: 600;\">Th\u00e0nh ph\u1ea7n<\/th>\n<th style=\"padding: 14px 16px; text-align: left; font-weight: 600;\">T\u00ean g\u1ecdi<\/th>\n<th style=\"padding: 14px 16px; text-align: left; font-weight: 600;\">Gi\u1ea3i th\u00edch chi ti\u1ebft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 14px 16px; border-bottom: 1px solid #e6edff; font-weight: 600; color: #0c40f4;\">Flag<\/td>\n<td style=\"padding: 14px 16px; border-bottom: 1px solid #e6edff;\">C\u1edd<\/td>\n<td style=\"padding: 14px 16px; border-bottom: 1px solid #e6edff;\">L\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng. Hi\u1ec7n t\u1ea1i chu\u1ea9n RFC ch\u1ec9 \u0111\u1ecbnh ngh\u0129a hai tr\u1ea1ng th\u00e1i:<br \/>\n&#8211; <strong>0<\/strong>: Ch\u1ebf \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng (Non-critical). N\u1ebfu CA kh\u00f4ng hi\u1ec3u b\u1ea3n ghi n\u00e0y, h\u1ecd c\u00f3 th\u1ec3 b\u1ecf qua.<br \/>\n&#8211; <strong>128<\/strong>: Ch\u1ebf \u0111\u1ed9 b\u1eaft bu\u1ed9c (Critical). N\u1ebfu CA kh\u00f4ng hi\u1ec3u d\u00f2ng n\u00e0y, h\u1ecd ph\u1ea3i d\u1eebng vi\u1ec7c c\u1ea5p ph\u00e1t SSL ngay l\u1eadp t\u1ee9c.<br \/>\n<em>Trong \u0111a s\u1ed1 tr\u01b0\u1eddng h\u1ee3p th\u1ef1c t\u1ebf, gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 0.<\/em><\/td>\n<\/tr>\n<tr style=\"background-color: #f8fbff;\">\n<td style=\"padding: 14px 16px; border-bottom: 1px solid #e6edff; font-weight: 600; color: #077ffa;\">Tag<\/td>\n<td style=\"padding: 14px 16px; border-bottom: 1px solid #e6edff;\">Th\u1ebb<\/td>\n<td style=\"padding: 14px 16px; border-bottom: 1px solid #e6edff;\">\u0110\u1ecbnh ngh\u0129a m\u1ee5c \u0111\u00edch c\u1ee7a b\u1ea3n ghi. C\u00f3 3 th\u1ebb ch\u00ednh:<br \/>\n&#8211; <strong>issue<\/strong>: Cho ph\u00e9p CA c\u1ea5p ch\u1ee9ng ch\u1ec9 SSL \u0111\u01a1n (cho domain.com ho\u1eb7c www.domain.com).<br \/>\n&#8211; <strong>issuewild<\/strong>: Cho ph\u00e9p CA c\u1ea5p ch\u1ee9ng ch\u1ec9 Wildcard (cho *.domain.com).<br \/>\n&#8211; <strong>iodef<\/strong>: Cung c\u1ea5p email ho\u1eb7c URL \u0111\u1ec3 CA b\u00e1o c\u00e1o n\u1ebfu c\u00f3 h\u00e0nh vi xin c\u1ea5p SSL tr\u00e1i ph\u00e9p.<\/td>\n<\/tr>\n<tr style=\"background-color: #ffffff;\">\n<td style=\"padding: 14px 16px; font-weight: 600; color: #0497fc;\">Value<\/td>\n<td style=\"padding: 14px 16px;\">Gi\u00e1 tr\u1ecb<\/td>\n<td style=\"padding: 14px 16px;\">L\u00e0 t\u00ean mi\u1ec1n \u0111\u1ecbnh danh c\u1ee7a nh\u00e0 cung c\u1ea5p CA.<br \/>\nV\u00ed d\u1ee5: <strong>digicert.com<\/strong>, <strong>letsencrypt.org<\/strong>, <strong>sectigo.com<\/strong>.<br \/>\n<em>L\u01b0u \u00fd: Gi\u00e1 tr\u1ecb n\u00e0y th\u01b0\u1eddng c\u1ea7n \u0111\u1eb7t trong d\u1ea5u ngo\u1eb7c k\u00e9p t\u00f9y theo giao di\u1ec7n qu\u1ea3n l\u00fd DNS.<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>L\u01b0u \u00fd<\/strong>:\u00a0Vi\u1ec7c hi\u1ec3u sai \u00fd ngh\u0129a c\u1ee7a\u00a0flag caa record\u00a0ho\u1eb7c ch\u1ecdn sai\u00a0tag\u00a0l\u00e0 nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u d\u1eabn \u0111\u1ebfn l\u1ed7i c\u1ea5u h\u00ecnh. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n mu\u1ed1n d\u00f9ng SSL Wildcard nh\u01b0ng ch\u1ec9 khai b\u00e1o th\u1ebb\u00a0issue, ch\u1ee9ng ch\u1ec9 Wildcard s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khong-co-hoac-cau-hinh-sai-CAA-Record-co-anh-huong-gi\"><\/span>Kh\u00f4ng c\u00f3 ho\u1eb7c c\u1ea5u h\u00ecnh sai CAA Record c\u00f3 \u1ea3nh h\u01b0\u1edfng g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>N\u1ebfu b\u1ea1n ch\u01b0a hi\u1ec3u r\u00f5 <strong>CAA Record l\u00e0 g\u00ec<\/strong> m\u00e0 v\u1ed9i v\u00e0ng c\u1ea5u h\u00ecnh, r\u1ee7i ro g\u1eb7p l\u1ed7i l\u00e0 r\u1ea5t cao. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c k\u1ecbch b\u1ea3n th\u01b0\u1eddng g\u1eb7p:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"SSL-khong-duoc-cap-Issuance-Failed\"><\/span>SSL kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p (Issuance Failed)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 h\u1eadu qu\u1ea3 tr\u1ef1c ti\u1ebfp nh\u1ea5t. N\u1ebfu b\u1ea1n c\u1ea5u h\u00ecnh CAA cho ph\u00e9p digicert.com nh\u01b0ng l\u1ea1i \u0111i mua SSL c\u1ee7a sectigo.com, Sectigo s\u1ebd t\u1eeb ch\u1ed1i c\u1ea5p ph\u00e1t. H\u1ec7 th\u1ed1ng c\u1ee7a h\u1ecd s\u1ebd b\u00e1o l\u1ed7i &#8220;CAA Error&#8221; ho\u1eb7c &#8220;Domain Control Validation Failed&#8221;.<\/p>\n<figure id=\"attachment_37729\" aria-describedby=\"caption-attachment-37729\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-37729\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anh-huong-khi-Khong-co-hoac-cau-hinh-sai-CAA-Record.jpg\" alt=\"\u1ea2nh h\u01b0\u1edfng khi Kh\u00f4ng c\u00f3 ho\u1eb7c c\u1ea5u h\u00ecnh sai CAA Record\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anh-huong-khi-Khong-co-hoac-cau-hinh-sai-CAA-Record.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anh-huong-khi-Khong-co-hoac-cau-hinh-sai-CAA-Record-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anh-huong-khi-Khong-co-hoac-cau-hinh-sai-CAA-Record-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-37729\" class=\"wp-caption-text\">\u1ea2nh h\u01b0\u1edfng khi Kh\u00f4ng c\u00f3 ho\u1eb7c c\u1ea5u h\u00ecnh sai CAA Record<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Website-bi-gian-doan-HTTPS-khi-gia-han\"><\/span>Website b\u1ecb gi\u00e1n \u0111o\u1ea1n HTTPS khi gia h\u1ea1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nhi\u1ec1u qu\u1ea3n tr\u1ecb vi\u00ean web c\u1ea5u h\u00ecnh CAA m\u1ed9t l\u1ea7n r\u1ed3i qu\u00ean l\u00e3ng. V\u00e0i n\u0103m sau, h\u1ecd chuy\u1ec3n sang nh\u00e0 cung c\u1ea5p SSL kh\u00e1c nh\u01b0ng qu\u00ean c\u1eadp nh\u1eadt b\u1ea3n ghi DNS. K\u1ebft qu\u1ea3 l\u00e0 khi ch\u1ee9ng ch\u1ec9 c\u0169 h\u1ebft h\u1ea1n, ch\u1ee9ng ch\u1ec9 m\u1edbi kh\u00f4ng th\u1ec3 c\u00e0i \u0111\u1eb7t, khi\u1ebfn website hi\u1ec7n c\u1ea3nh b\u00e1o &#8220;Not Secure&#8221; \u0111\u1ecf l\u00f2m tr\u00ean tr\u00ecnh duy\u1ec7t. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn SEO v\u00e0 ni\u1ec1m tin kh\u00e1ch h\u00e0ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mat-di-quyen-kiem-soat\"><\/span>M\u1ea5t \u0111i quy\u1ec1n ki\u1ec3m so\u00e1t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu c\u1ea5u h\u00ecnh sai th\u1ebb iodef, b\u1ea1n s\u1ebd kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c c\u1ea3nh b\u00e1o quan tr\u1ecdng khi website b\u1ecb t\u1ea5n c\u00f4ng gi\u1ea3 m\u1ea1o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Danh-sach-Value-CAA-cua-cac-nha-cung-cap-SSL-pho-bien\"><\/span>Danh s\u00e1ch Value CAA c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p SSL ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n c\u1ea5u h\u00ecnh nhanh ch\u00f3ng, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch value chu\u1ea9n c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p SSL ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam v\u00e0 qu\u1ed1c t\u1ebf.<\/p>\n<ul>\n<li><strong>Comodo \/ Sectigo:<\/strong> sectigo.com (L\u01b0u \u00fd: tr\u01b0\u1edbc \u0111\u00e2y l\u00e0 comodoca.com, hi\u1ec7n t\u1ea1i n\u00ean d\u00f9ng sectigo.com \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o nh\u1ea5t).<\/li>\n<li><strong>DigiCert:<\/strong> digicert.com (D\u00f9ng cho c\u1ea3 c\u00e1c th\u01b0\u01a1ng hi\u1ec7u con nh\u01b0 GeoTrust, Thawte, RapidSSL).<\/li>\n<li><strong>Let&#8217;s Encrypt:<\/strong> letsencrypt.org (D\u00e0nh cho SSL mi\u1ec5n ph\u00ed).<\/li>\n<li><strong>GlobalSign:<\/strong> globalsign.com<\/li>\n<li><strong>Entrust:<\/strong> entrust.net<\/li>\n<li><strong>GoDaddy:<\/strong> godaddy.com<\/li>\n<li><strong>Amazon AWS:<\/strong> amazon.com<\/li>\n<\/ul>\n<p>Khi t\u00ecm ki\u1ebfm th\u00f4ng tin <strong>CAA Record<\/strong>, ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng t\u00ecm ki\u1ebfm danh s\u00e1ch n\u00e0y \u0111\u1ec3 \u00e1p d\u1ee5ng ngay. H\u00e3y \u0111\u1ea3m b\u1ea3o b\u1ea1n ch\u1ecdn \u0111\u00fang nh\u00e0 cung c\u1ea5p m\u00e0 m\u00ecnh \u0111\u00e3 mua d\u1ecbch v\u1ee5.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vi-du-CAA-Record-thuc-te-de-hieu-cho-nguoi-moi\"><\/span>V\u00ed d\u1ee5 CAA Record th\u1ef1c t\u1ebf (d\u1ec5 hi\u1ec3u cho ng\u01b0\u1eddi m\u1edbi)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>L\u00fd thuy\u1ebft v\u1ec1 <strong>CAA Record<\/strong>\u00a0\u0111\u00f4i khi h\u01a1i tr\u1eebu t\u01b0\u1ee3ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c v\u00ed d\u1ee5 c\u1ee5 th\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng:<\/p>\n<p><strong>V\u00ed d\u1ee5 1: Website tin t\u1ee9c th\u00f4ng th\u01b0\u1eddng<\/strong><\/p>\n<p>B\u1ea1n mua SSL c\u1ee7a Sectigo cho t\u00ean mi\u1ec1n tintuc247.com. B\u1ea1n mu\u1ed1n ch\u1eb7n t\u1ea5t c\u1ea3 c\u00e1c CA kh\u00e1c.<\/p>\n<pre>C\u1ea5u h\u00ecnh DNS s\u1ebd c\u1ea7n 1 d\u00f2ng:<\/pre>\n<p>tintuc247.com. IN CAA 0 issue &#8220;sectigo.com&#8221;<\/p>\n<p><strong>V\u00ed d\u1ee5 2: Doanh nghi\u1ec7p d\u00f9ng nhi\u1ec1u lo\u1ea1i SSL<\/strong><\/p>\n<p>C\u00f4ng ty b\u1ea1n d\u00f9ng DigiCert cho t\u00ean mi\u1ec1n ch\u00ednh (congty.com) v\u00e0 d\u00f9ng Let&#8217;s Encrypt mi\u1ec5n ph\u00ed cho c\u00e1c trang ph\u1ee5 (blog.congty.com). B\u1ea1n c\u1ea7n khai b\u00e1o c\u1ea3 hai \u0111\u1ec3 tr\u00e1nh xung \u0111\u1ed9t.<\/p>\n<p>C\u1ea5u h\u00ecnh s\u1ebd g\u1ed3m 2 d\u00f2ng:<\/p>\n<pre>congty.com. IN CAA 0 issue \"digicert.com\"<\/pre>\n<pre>congty.com. IN CAA 0 issue \"letsencrypt.org\"<\/pre>\n<p><strong>V\u00ed d\u1ee5 3: C\u1ea5m tuy\u1ec7t \u0111\u1ed1i vi\u1ec7c c\u1ea5p SSL<\/strong><\/p>\n<p>B\u1ea1n c\u00f3 m\u1ed9t t\u00ean mi\u1ec1n n\u1ed9i b\u1ed9 internal.local v\u00e0 kh\u00f4ng mu\u1ed1n b\u1ea5t k\u1ef3 ai c\u1ea5p SSL c\u00f4ng c\u1ed9ng cho n\u00f3 (\u0111\u00e2y l\u00e0 t\u00ean mi\u1ec1n n\u1ed9i b\u1ed9 minh h\u1ecda, kh\u00f4ng ph\u1ea3i TLD h\u1ee3p l\u1ec7 c\u00f4ng c\u1ed9ng).<\/p>\n<pre>C\u1ea5u h\u00ecnh: internal.local IN CAA 0 issue \";\"<\/pre>\n<p>(D\u1ea5u ch\u1ea5m ph\u1ea9y ; ngh\u0129a l\u00e0 danh s\u00e1ch r\u1ed7ng, kh\u00f4ng cho ph\u00e9p ai c\u1ea3).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-ban-nen-nho-don-vi-hosting-ho-tro-CAA-Record\"><\/span>Khi n\u00e0o b\u1ea1n n\u00ean nh\u1edd \u0111\u01a1n v\u1ecb hosting h\u1ed7 tr\u1ee3 CAA Record?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c c\u1ea5u h\u00ecnh DNS tuy kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p nh\u01b0ng \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c tuy\u1ec7t \u0111\u1ed1i. Sai m\u1ed9t d\u1ea5u ch\u1ea5m hay m\u1ed9t k\u00fd t\u1ef1 c\u0169ng c\u00f3 th\u1ec3 l\u00e0m website gi\u00e1n \u0111o\u1ea1n truy c\u1eadp. B\u1ea1n n\u00ean c\u00e2n nh\u1eafc nh\u1edd s\u1ef1 h\u1ed7 tr\u1ee3 khi:<\/p>\n<ul>\n<li><strong>Website kinh doanh l\u1edbn:<\/strong> B\u1ea1n kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn r\u1ee7i ro website b\u1ecb &#8220;down&#8221; d\u00f9 ch\u1ec9 v\u00e0i ph\u00fat do l\u1ed7i c\u1ea5u h\u00ecnh.<\/li>\n<li><strong>S\u1eed d\u1ee5ng nhi\u1ec1u d\u1ecbch v\u1ee5 SSL:<\/strong> C\u1ea5u h\u00ecnh ph\u1ee9c t\u1ea1p v\u1edbi nhi\u1ec1u d\u00f2ng CAA kh\u00e1c nhau.<\/li>\n<li><strong>Kh\u00f4ng c\u00f3 \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt:<\/strong> B\u1ea1n l\u00e0 ch\u1ee7 doanh nghi\u1ec7p v\u00e0 kh\u00f4ng r\u00e0nh v\u1ec1 k\u1ef9 thu\u1eadt.<\/li>\n<\/ul>\n<p>T\u1ea1i Vi\u1ec7t Nam, <a href=\"https:\/\/interdata.vn\/\"><strong>InterData<\/strong> <\/a>\u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 \u0111\u01a1n v\u1ecb cung c\u1ea5p Hosting ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 \u0111a d\u1ea1ng T\u00ean mi\u1ec1n v\u1edbi d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt chuy\u00ean s\u00e2u. \u0110\u1ed9i ng\u0169 InterData s\u1eb5n s\u00e0ng h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng ki\u1ec3m tra v\u00e0 c\u1ea5u h\u00ecnh c\u00e1c b\u1ea3n ghi DNS ph\u1ee9c t\u1ea1p nh\u01b0 CAA, DKIM, SPF 24\/7 m\u1ed9t c\u00e1ch nhanh ch\u00f3ng nh\u1ea5t. Thay v\u00ec t\u1ef1 m\u00e0y m\u00f2 v\u1edbi r\u1ee7i ro cao, vi\u1ec7c \u1ee7y th\u00e1c cho c\u00e1c chuy\u00ean gia t\u1ea1i InterData s\u1ebd gi\u00fap b\u1ea1n y\u00ean t\u00e2m ph\u00e1t tri\u1ec3n kinh doanh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Huong-dan-tao-CAA-Record-trong-DNS-tung-buoc\"><\/span>H\u01b0\u1edbng d\u1eabn t\u1ea1o CAA Record trong DNS t\u1eebng b\u01b0\u1edbc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-1-Xac-dinh-cac-thong-tin-can-chuan-bi\"><\/span>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng tin c\u1ea7n chu\u1ea9n b\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u01b0\u1edbc khi th\u00eam CAA Record, b\u1ea1n c\u1ea7n x\u00e1c \u0111\u1ecbnh r\u00f5 c\u00e1c th\u00f4ng tin sau:<\/p>\n<ul>\n<li><strong>T\u00ean mi\u1ec1n<\/strong>: T\u00ean mi\u1ec1n m\u00e0 b\u1ea1n mu\u1ed1n \u00e1p d\u1ee5ng CAA Record.<\/li>\n<li><strong>Flag<\/strong>: Th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb:\n<ul>\n<li>0: Kh\u00f4ng c\u00f3 h\u1ea1n ch\u1ebf<\/li>\n<li>128: Kh\u00f4ng cho ph\u00e9p CA kh\u00e1c c\u1ea5p ch\u1ee9ng ch\u1ec9<\/li>\n<li>255: C\u00f3 th\u1ec3 d\u00f9ng cho c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tag<\/strong>: X\u00e1c \u0111\u1ecbnh lo\u1ea1i ch\u1ee9ng ch\u1ec9 ho\u1eb7c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng, v\u00ed d\u1ee5:\n<ul>\n<li>issue (c\u1ea5p ch\u1ee9ng ch\u1ec9 th\u00f4ng th\u01b0\u1eddng)<\/li>\n<li>issuewild (c\u1ea5p ch\u1ee9ng ch\u1ec9 wildcard)<\/li>\n<li>iodef (\u0111\u1ecba ch\u1ec9 nh\u1eadn b\u00e1o c\u00e1o)<\/li>\n<\/ul>\n<\/li>\n<li><strong>Value<\/strong>: T\u00ean nh\u00e0 cung c\u1ea5p CA \u0111\u01b0\u1ee3c ph\u00e9p c\u1ea5p ch\u1ee9ng ch\u1ec9, v\u00ed d\u1ee5: letsencrypt.org, sectigo.com.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-2-Truy-cap-vao-trang-quan-ly-DNS\"><\/span>B\u01b0\u1edbc 2: Truy c\u1eadp v\u00e0o trang qu\u1ea3n l\u00fd DNS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u0103ng nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd DNS c\u1ee7a b\u1ea1n. N\u1ebfu \u0111ang s\u1eed d\u1ee5ng cPanel, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ul>\n<li>Trong m\u1ee5c <strong>Domain<\/strong>, ch\u1ecdn <strong>Zone Editor<\/strong>.<\/li>\n<li>Nh\u1ea5n <strong>Manage<\/strong> t\u1ea1i t\u00ean mi\u1ec1n m\u00e0 b\u1ea1n mu\u1ed1n th\u00eam b\u1ea3n ghi CAA.<\/li>\n<\/ul>\n<figure id=\"attachment_37730\" aria-describedby=\"caption-attachment-37730\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-37730\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-tao-CAA-Record-trong-DNS.jpg\" alt=\"C\u00e1ch t\u1ea1o CAA Record trong DNS\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-tao-CAA-Record-trong-DNS.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-tao-CAA-Record-trong-DNS-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-tao-CAA-Record-trong-DNS-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-37730\" class=\"wp-caption-text\">C\u00e1ch t\u1ea1o CAA Record trong DNS<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-3-Them-ban-ghi-CAA\"><\/span>B\u01b0\u1edbc 3: Th\u00eam b\u1ea3n ghi CAA<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong giao di\u1ec7n <strong>Zone Editor<\/strong>, t\u00ecm n\u00fat <strong>Add Record<\/strong> v\u00e0 ch\u1ecdn <strong>Add CAA Record<\/strong> t\u1eeb danh s\u00e1ch th\u1ea3 xu\u1ed1ng. Sau \u0111\u00f3, \u0111i\u1ec1n \u0111\u1ea7y \u0111\u1ee7 c\u00e1c tr\u01b0\u1eddng th\u00f4ng tin b\u1eaft bu\u1ed9c:<\/p>\n<ul>\n<li><strong>Name<\/strong>: Nh\u1eadp t\u00ean mi\u1ec1n ho\u1eb7c t\u00ean mi\u1ec1n ph\u1ee5.<\/li>\n<li><strong>Type<\/strong>: Ch\u1ecdn CAA.<\/li>\n<li><strong>Flag<\/strong>: Nh\u1eadp gi\u00e1 tr\u1ecb flag \u0111\u00e3 x\u00e1c \u0111\u1ecbnh.<\/li>\n<li><strong>Tag<\/strong>: Nh\u1eadp tag ph\u00f9 h\u1ee3p.<\/li>\n<li><strong>Value<\/strong>: Nh\u1eadp t\u00ean CA \u0111\u01b0\u1ee3c ph\u00e9p c\u1ea5p ch\u1ee9ng ch\u1ec9.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-4-Luu-cau-hinh-va-kiem-tra\"><\/span>B\u01b0\u1edbc 4: L\u01b0u c\u1ea5u h\u00ecnh v\u00e0 ki\u1ec3m tra<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nh\u1ea5n <strong>Add Record<\/strong> \u0111\u1ec3 ho\u00e0n t\u1ea5t vi\u1ec7c th\u00eam CAA Record.<\/p>\n<p>Sau \u0111\u00f3, b\u1ea1n n\u00ean ki\u1ec3m tra l\u1ea1i b\u1ea3n ghi CAA v\u1eeba t\u1ea1o b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra DNS tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea3n ghi \u0111\u00e3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ch\u00ednh x\u00e1c v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 mong mu\u1ed1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-chinh-sua-hoac-xoa-ban-ghi-CAA-hien-co\"><\/span>C\u00e1ch ch\u1ec9nh s\u1eeda ho\u1eb7c x\u00f3a b\u1ea3n ghi CAA hi\u1ec7n c\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Cach-chinh-sua-ban-ghi-CAA\"><\/span>C\u00e1ch ch\u1ec9nh s\u1eeda b\u1ea3n ghi CAA<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>B\u01b0\u1edbc 1 \u2013 \u0110\u0103ng nh\u1eadp v\u00e0o t\u00e0i kho\u1ea3n qu\u1ea3n l\u00fd<\/strong><\/p>\n<p>Truy c\u1eadp v\u00e0o trang qu\u1ea3n l\u00fd c\u1ee7a nh\u00e0 cung c\u1ea5p t\u00ean mi\u1ec1n v\u00e0 \u0111\u0103ng nh\u1eadp v\u00e0o t\u00e0i kho\u1ea3n c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>B\u01b0\u1edbc 2 \u2013 Ch\u1ecdn t\u00ean mi\u1ec1n c\u1ea7n thao t\u00e1c<\/strong><\/p>\n<p>V\u00e0o m\u1ee5c <strong>T\u00ean mi\u1ec1n<\/strong>, sau \u0111\u00f3 nh\u1ea5p ch\u1ecdn t\u00ean mi\u1ec1n m\u00e0 b\u1ea1n mu\u1ed1n ch\u1ec9nh s\u1eeda.<\/p>\n<p><strong>B\u01b0\u1edbc 3 \u2013 Truy c\u1eadp ph\u1ea7n b\u1ea3n ghi DNS<\/strong><\/p>\n<p>Trong khu v\u1ef1c qu\u1ea3n tr\u1ecb t\u00ean mi\u1ec1n, t\u00ecm v\u00e0 m\u1edf tab <strong>B\u1ea3n ghi DNS<\/strong>.<\/p>\n<p><strong>B\u01b0\u1edbc 4 \u2013 Ch\u1ec9nh s\u1eeda b\u1ea3n ghi CAA<\/strong><\/p>\n<ul>\n<li>T\u00ecm d\u00f2ng b\u1ea3n ghi CAA c\u1ea7n ch\u1ec9nh s\u1eeda.<\/li>\n<li>Nh\u1ea5n v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng c\u00e2y b\u00fat \u0111\u1ec3 ch\u1ec9nh s\u1eeda.<\/li>\n<li>Thay \u0111\u1ed5i c\u00e1c th\u00f4ng tin c\u1ea7n thi\u1ebft nh\u01b0 <strong>Host<\/strong>, <strong>Gi\u00e1 tr\u1ecb<\/strong> ho\u1eb7c <strong>TTL<\/strong>.<\/li>\n<li>L\u01b0u l\u1ea1i thay \u0111\u1ed5i b\u1eb1ng c\u00e1ch nh\u1ea5n n\u00fat <strong>L\u01b0u<\/strong> ho\u1eb7c bi\u1ec3u t\u01b0\u1ee3ng \u0111\u0129a m\u1ec1m.<\/li>\n<\/ul>\n<figure id=\"attachment_37731\" aria-describedby=\"caption-attachment-37731\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-37731\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-chinh-sua-hoac-xoa-ban-ghi-CAA-hien-co.jpg\" alt=\"C\u00e1ch ch\u1ec9nh s\u1eeda ho\u1eb7c x\u00f3a b\u1ea3n ghi CAA hi\u1ec7n c\u00f3\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-chinh-sua-hoac-xoa-ban-ghi-CAA-hien-co.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-chinh-sua-hoac-xoa-ban-ghi-CAA-hien-co-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-chinh-sua-hoac-xoa-ban-ghi-CAA-hien-co-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-37731\" class=\"wp-caption-text\">C\u00e1ch ch\u1ec9nh s\u1eeda ho\u1eb7c x\u00f3a b\u1ea3n ghi CAA hi\u1ec7n c\u00f3<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cach-xoa-ban-ghi-CAA\"><\/span>C\u00e1ch x\u00f3a b\u1ea3n ghi CAA<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>B\u01b0\u1edbc 1 \u2013 \u0110\u0103ng nh\u1eadp v\u00e0o t\u00e0i kho\u1ea3n<\/strong><\/p>\n<p>Th\u1ef1c hi\u1ec7n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u01b0\u1edbc \u0111\u0103ng nh\u1eadp khi ch\u1ec9nh s\u1eeda b\u1ea3n ghi CAA.<\/p>\n<p><strong>B\u01b0\u1edbc 2 \u2013 Ch\u1ecdn t\u00ean mi\u1ec1n c\u1ea7n thao t\u00e1c<\/strong><\/p>\n<p>V\u00e0o m\u1ee5c <strong>T\u00ean mi\u1ec1n<\/strong>, sau \u0111\u00f3 ch\u1ecdn t\u00ean mi\u1ec1n b\u1ea1n mu\u1ed1n x\u00f3a b\u1ea3n ghi.<\/p>\n<p><strong>B\u01b0\u1edbc 3 \u2013 Truy c\u1eadp ph\u1ea7n b\u1ea3n ghi DNS<\/strong><\/p>\n<p>M\u1edf tab <strong>B\u1ea3n ghi DNS<\/strong> trong khu v\u1ef1c qu\u1ea3n tr\u1ecb t\u00ean mi\u1ec1n.<\/p>\n<p><strong>B\u01b0\u1edbc 4 \u2013 X\u00f3a b\u1ea3n ghi CAA<\/strong><\/p>\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh d\u00f2ng b\u1ea3n ghi CAA c\u1ea7n x\u00f3a.<\/li>\n<li>Nh\u1ea5n v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng th\u00f9ng r\u00e1c \u0111\u1ec3 th\u1ef1c hi\u1ec7n x\u00f3a.<\/li>\n<li>X\u00e1c nh\u1eadn thao t\u00e1c b\u1eb1ng c\u00e1ch ch\u1ecdn <strong>\u0110\u00fang, t\u00f4i mu\u1ed1n x\u00f3a b\u1ea3n ghi n\u00e0y<\/strong>.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Ket-luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Qua b\u00e0i vi\u1ebft n\u00e0y, hy v\u1ecdng b\u1ea1n \u0111\u00e3 n\u1eafm r\u00f5 <strong>CAA Record l\u00e0 g\u00ec<\/strong> v\u00e0 t\u1ea7m quan tr\u1ecdng kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a n\u00f3 trong h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt website hi\u1ec7n \u0111\u1ea1i. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u00f4 khan m\u00e0 l\u00e0 l\u00e1 ch\u1eafn b\u1ea3o v\u1ec7 th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a b\u1ea1n tr\u01b0\u1edbc c\u00e1c r\u1ee7i ro gi\u1ea3 m\u1ea1o tr\u00ean m\u00f4i tr\u01b0\u1eddng internet.<\/p>\n<p>\u0110\u1eebng \u0111\u1ec3 website c\u1ee7a b\u1ea1n g\u1eb7p l\u1ed7i SSL ch\u1ec9 v\u00ec thi\u1ebfu m\u1ed9t d\u00f2ng c\u1ea5u h\u00ecnh \u0111\u01a1n gi\u1ea3n. H\u00e3y d\u00e0nh th\u1eddi gian ki\u1ec3m tra l\u1ea1i DNS ngay h\u00f4m nay. N\u1ebfu b\u1ea1n g\u1eb7p b\u1ea5t k\u1ef3 kh\u00f3 kh\u0103n n\u00e0o trong qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n, h\u00e3y \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn b\u00ean d\u01b0\u1edbi ho\u1eb7c li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 h\u1ed7 tr\u1ee3 \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p k\u1ecbp th\u1eddi. Ch\u00fac website c\u1ee7a b\u1ea1n lu\u00f4n ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi tri\u1ec3n khai ch\u1ee9ng ch\u1ec9 SSL cho website, kh\u00f4ng \u00edt ng\u01b0\u1eddi g\u1eb7p t\u00ecnh hu\u1ed1ng c\u1ea5u h\u00ecnh xong nh\u01b0ng v\u1eabn ph\u00e1t sinh l\u1ed7i, ho\u1eb7c nh\u00e0 cung c\u1ea5p SSL y\u00eau c\u1ea7u ki\u1ec3m tra th\u00eam m\u1ed9t th\u00e0nh ph\u1ea7n c\u00f3 t\u00ean CAA Record. V\u1eady CAA Record l\u00e0 g\u00ec, b\u1ea3n ghi n\u00e0y c\u00f3 vai tr\u00f2 g\u00ec trong h\u1ec7 th\u1ed1ng DNS<\/p>\n","protected":false},"author":11,"featured_media":37732,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-37725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-website"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/37725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=37725"}],"version-history":[{"count":4,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/37725\/revisions"}],"predecessor-version":[{"id":39340,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/37725\/revisions\/39340"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/37732"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=37725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=37725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=37725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}