{"id":40343,"date":"2026-03-18T08:31:53","date_gmt":"2026-03-18T01:31:53","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=40343"},"modified":"2026-03-21T09:33:09","modified_gmt":"2026-03-21T02:33:09","slug":"email-bi-spam-hosting","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/email-bi-spam-hosting\/","title":{"rendered":"Nguy\u00ean nh\u00e2n email b\u1ecb spam hosting: C\u00e1ch kh\u1eafc ph\u1ee5c nhanh, \u0111\u01a1n gi\u1ea3n"},"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\/email-bi-spam-hosting\/#Nguyen-nhan-email-bi-danh-dau-spam-khi-su-dung-Hosting\" >Nguy\u00ean nh\u00e2n email b\u1ecb \u0111\u00e1nh d\u1ea5u spam khi s\u1eed d\u1ee5ng Hosting<\/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\/email-bi-spam-hosting\/#So-luoc-%E2%80%9CBo-3-bao-mat%E2%80%9D-SPF-DKIM-va-DMARC\" >S\u01a1 l\u01b0\u1ee3c &#8220;B\u1ed9 3 b\u1ea3o m\u1eadt&#8221;: SPF, DKIM v\u00e0 DMARC<\/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\/email-bi-spam-hosting\/#SPF-Sender-Policy-Framework\" >SPF (Sender Policy Framework)<\/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\/email-bi-spam-hosting\/#DKIM-DomainKeys-Identified-Mail\" >DKIM (DomainKeys Identified Mail)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/email-bi-spam-hosting\/#DMARC-Domain-based-Message-Authentication-Reporting-and-Conformance\" >DMARC (Domain-based Message Authentication, Reporting, and Conformance)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/email-bi-spam-hosting\/#Cac-buoc-khac-phuc-email-bi-Spam-trong-cPanel\" >C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c email b\u1ecb Spam trong cPanel<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/email-bi-spam-hosting\/#1-Cau-hinh-xac-thuc-Email-Quan-trong-nhat\" >1. C\u1ea5u h\u00ecnh x\u00e1c th\u1ef1c Email (Quan tr\u1ecdng nh\u1ea5t)<\/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\/email-bi-spam-hosting\/#2-Kiem-tra-uy-tin-IP-va-Domain\" >2. Ki\u1ec3m tra uy t\u00edn IP v\u00e0 Domain<\/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\/email-bi-spam-hosting\/#3-Cau-hinh-Spam-Filters\" >3. C\u1ea5u h\u00ecnh Spam Filters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/email-bi-spam-hosting\/#4-Toi-uu-noi-dung-va-danh-sach-gui\" >4. T\u1ed1i \u01b0u n\u1ed9i dung v\u00e0 danh s\u00e1ch g\u1eedi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/email-bi-spam-hosting\/#FAQ-%E2%80%93-Cau-hoi-thuong-gap\" >FAQ \u2013 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>Vi\u1ec7c email g\u1eedi \u0111i b\u1ecb r\u01a1i v\u00e0o th\u01b0 m\u1ee5c Spam l\u00e0 t\u00ecnh tr\u1ea1ng g\u00e2y \u0111au \u0111\u1ea7u cho nhi\u1ec1u doanh nghi\u1ec7p v\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean website. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u. N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p t\u00ecnh tr\u1ea1ng n\u00e0y, b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y t\u1eeb\u00a0InterData\u00a0s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 <strong>nguy\u00ean nh\u00e2n email b\u1ecb spam hosting v\u00e0 c\u00e1ch x\u1eed l\u00fd tri\u1ec7t \u0111\u1ec3 tr\u00ean cPanel<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen-nhan-email-bi-danh-dau-spam-khi-su-dung-Hosting\"><\/span>Nguy\u00ean nh\u00e2n email b\u1ecb \u0111\u00e1nh d\u1ea5u spam khi s\u1eed d\u1ee5ng Hosting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Email b\u1ecb spam khi s\u1eed d\u1ee5ng hosting th\u01b0\u1eddng xu\u1ea5t ph\u00e1t t\u1eeb vi\u1ec7c m\u00e1y ch\u1ee7 b\u1ecb &#8220;v\u1ea5y b\u1ea9n&#8221; ho\u1eb7c c\u1ea5u h\u00ecnh x\u00e1c th\u1ef1c ch\u01b0a chu\u1ea9n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t:<\/p>\n<ul>\n<li><strong>IP Hosting b\u1ecb Blacklist:<\/strong> M\u00e1y ch\u1ee7 g\u1eedi mail d\u00f9ng chung (Shared IP) c\u00f3 th\u1ec3 \u0111\u00e3 t\u1eebng b\u1ecb ng\u01b0\u1eddi d\u00f9ng kh\u00e1c l\u1ee3i d\u1ee5ng \u0111\u1ec3 ph\u00e1t t\u00e1n th\u01b0 r\u00e1c, khi\u1ebfn IP \u0111\u00f3 n\u1eb1m trong danh s\u00e1ch \u0111en c\u1ee7a Spamhaus, Barracuda&#8230;<\/li>\n<li><strong>Thi\u1ebfu c\u1ea5u h\u00ecnh x\u00e1c th\u1ef1c:<\/strong> Ch\u01b0a thi\u1ebft l\u1eadp ho\u1eb7c c\u1ea5u h\u00ecnh sai c\u00e1c b\u1ea3n ghi DNS quan tr\u1ecdng nh\u01b0 <strong>SPF, DKIM, v\u00e0 DMARC<\/strong> khi\u1ebfn c\u00e1c b\u1ed9 l\u1ecdc email c\u1ee7a Gmail, Outlook kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ed9 tin c\u1eady c\u1ee7a ng\u01b0\u1eddi g\u1eedi.<\/li>\n<li><strong>N\u1ed9i dung v\u00e0 ti\u00eau \u0111\u1ec1 email:<\/strong> S\u1eed d\u1ee5ng t\u1eeb ng\u1eef qu\u00e1 nh\u1ea1y c\u1ea3m (mi\u1ec5n ph\u00ed, khuy\u1ebfn m\u00e3i, tr\u00fang th\u01b0\u1edfng, vi\u1ebft hoa to\u00e0n b\u1ed9&#8230;) ho\u1eb7c ch\u1ee9a c\u00e1c \u0111\u01b0\u1eddng link kh\u00f4ng an to\u00e0n, m\u00e3 \u0111\u1ed9c.<\/li>\n<li><strong>Danh s\u00e1ch nh\u1eadn email k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng:<\/strong> G\u1eedi email t\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 &#8220;ch\u1ebft&#8221; ho\u1eb7c b\u1ecb ch\u00ednh ng\u01b0\u1eddi nh\u1eadn ch\u1ee7 \u0111\u1ed9ng b\u00e1o c\u00e1o spam.<\/li>\n<li><strong>T\u1ea7n su\u1ea5t g\u1eedi qu\u00e1 d\u00e0y \u0111\u1eb7c:<\/strong> G\u1eedi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn email trong th\u1eddi gian qu\u00e1 ng\u1eafn, d\u1ec5 b\u1ecb h\u1ec7 th\u1ed1ng \u0111\u00e1nh gi\u00e1 l\u00e0 h\u00e0nh vi spam.<\/li>\n<li><strong>T\u00e0i kho\u1ea3n email b\u1ecb chi\u1ebfm quy\u1ec1n:<\/strong> T\u00e0i kho\u1ea3n b\u1ecb hacker x\u00e2m nh\u1eadp v\u00e0 l\u1ee3i d\u1ee5ng \u0111\u1ec3 g\u1eedi th\u01b0 r\u00e1c m\u00e0 ch\u1ee7 s\u1edf h\u1eefu kh\u00f4ng hay bi\u1ebft.<\/li>\n<\/ul>\n<div class=\"highlight-cta-box\">\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-40348\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Nguyen-nhan-email-bi-danh-dau-spam-Hosting-1024x683.jpg\" alt=\"Nguy\u00ean nh\u00e2n email b\u1ecb \u0111\u00e1nh d\u1ea5u spam Hosting\" width=\"800\" height=\"533\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Nguyen-nhan-email-bi-danh-dau-spam-Hosting-1024x683.jpg 1024w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Nguyen-nhan-email-bi-danh-dau-spam-Hosting-300x200.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Nguyen-nhan-email-bi-danh-dau-spam-Hosting-768x512.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Nguyen-nhan-email-bi-danh-dau-spam-Hosting.jpg 1080w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\n<\/div>\n<p><span style=\"color: #ed1c24; font-size: 120%;\"><strong>Tr\u1ea3i nghi\u1ec7m Hosting t\u1ed1c \u0111\u1ed9 cao t\u1ea1i InterData<\/strong><\/span><\/p>\n<p>Email c\u1ee7a b\u1ea1n c\u1ea7n m\u1ed9t h\u1ea1 t\u1ea7ng s\u1ea1ch v\u00e0 chuy\u00ean nghi\u1ec7p? \u0110\u1eebng \u0111\u1ec3 IP x\u1ea5u l\u00e0m gi\u00e1n \u0111o\u1ea1n c\u00f4ng vi\u1ec7c. InterData cung c\u1ea5p d\u1ecbch v\u1ee5 Thu\u00ea Hosting gi\u00e1 r\u1ebb v\u1edbi ph\u1ea7n c\u1ee9ng th\u1ebf h\u1ec7 m\u1edbi, CPU AMD EPYC, \u1ed5 c\u1ee9ng SSD NVMe U.2, b\u0103ng th\u00f4ng l\u1edbn v\u00e0 t\u1ed1c \u0111\u1ed9 v\u01b0\u1ee3t tr\u1ed9i. Gi\u00e1 ch\u1ec9 t\u1eeb 30k\/th\u00e1ng \u2013 Gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho m\u1ecdi doanh nghi\u1ec7p!<\/p>\n<a href=\"https:\/\/interdata.vn\/thue-hosting\/\" class=\"button primary is-primary is-medium\"  >\n\t\t<span>Xem b\u1ea3ng gi\u00e1 thu\u00ea Hosting t\u1ea1i \u0111\u00e2y!<\/span>\n\t<\/a>\n\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"So-luoc-%E2%80%9CBo-3-bao-mat%E2%80%9D-SPF-DKIM-va-DMARC\"><\/span>S\u01a1 l\u01b0\u1ee3c &#8220;B\u1ed9 3 b\u1ea3o m\u1eadt&#8221;: SPF, DKIM v\u00e0 DMARC<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 &#8220;th\u00f4ng quan&#8221; qua c\u00e1c b\u1ed9 l\u1ecdc kh\u00f3 t\u00ednh, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh 3 b\u1ea3n ghi DNS quan tr\u1ecdng sau:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"SPF-Sender-Policy-Framework\"><\/span>SPF (Sender Policy Framework)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>SPF <\/strong>l\u00e0 m\u1ed9t b\u1ea3n ghi TXT trong DNS li\u1ec7t k\u00ea c\u00e1c m\u00e1y ch\u1ee7 (IP) \u0111\u01b0\u1ee3c ph\u00e9p g\u1eedi email thay m\u1eb7t cho t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>T\u00e1c d\u1ee5ng:<\/strong> SPF ng\u0103n ch\u1eb7n k\u1ebb x\u1ea5u gi\u1ea3 m\u1ea1o t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n \u0111\u1ec3 g\u1eedi email l\u1eeba \u0111\u1ea3o.<\/li>\n<\/ul>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-40350\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/bo-3-SPF-DKIM-va-DMARC.jpg\" alt=\"b\u1ed9 3 SPF, DKIM v\u00e0 DMARC\" width=\"800\" height=\"505\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/bo-3-SPF-DKIM-va-DMARC.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/bo-3-SPF-DKIM-va-DMARC-300x189.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/bo-3-SPF-DKIM-va-DMARC-768x485.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"DKIM-DomainKeys-Identified-Mail\"><\/span>DKIM (DomainKeys Identified Mail)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>DKIM<\/strong> l\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a ch\u1eef k\u00fd s\u1ed1. Khi b\u1ea1n g\u1eedi email, h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u00ednh k\u00e8m m\u1ed9t ch\u1eef k\u00fd m\u1eadt m\u00e3 v\u00e0o email.<\/li>\n<li><strong>T\u00e1c d\u1ee5ng:<\/strong> DKIM ch\u1ee9ng minh v\u1edbi ng\u01b0\u1eddi nh\u1eadn r\u1eb1ng n\u1ed9i dung email kh\u00f4ng b\u1ecb thay \u0111\u1ed5i ho\u1eb7c ch\u1ec9nh s\u1eeda tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"DMARC-Domain-based-Message-Authentication-Reporting-and-Conformance\"><\/span>DMARC (Domain-based Message Authentication, Reporting, and Conformance)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>DMARC<\/strong> l\u00e0 m\u1ed9t ch\u00ednh s\u00e1ch ch\u1ec9 d\u1eabn cho m\u00e1y ch\u1ee7 nh\u1eadn th\u01b0 ph\u1ea3i l\u00e0m g\u00ec n\u1ebfu email kh\u00f4ng v\u01b0\u1ee3t qua \u0111\u01b0\u1ee3c ki\u1ec3m tra SPF ho\u1eb7c DKIM (v\u00ed d\u1ee5: t\u1eeb ch\u1ed1i lu\u00f4n, ho\u1eb7c ch\u1ec9 g\u1eedi v\u00e0o spam).<\/li>\n<li><strong>T\u00e1c d\u1ee5ng:<\/strong> DMARC gi\u00fap ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n ki\u1ec3m so\u00e1t v\u00e0 nh\u1eadn b\u00e1o c\u00e1o v\u1ec1 c\u00e1c n\u1ed7 l\u1ef1c gi\u1ea3 m\u1ea1o.<span style=\"font-size: 14.4px;\">\u00a0<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac-buoc-khac-phuc-email-bi-Spam-trong-cPanel\"><\/span>C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c email b\u1ecb Spam trong cPanel<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 \u0111\u01b0a email tr\u1edf l\u1ea1i Inbox, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh chu\u1ea9n x\u00e1c d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Cau-hinh-xac-thuc-Email-Quan-trong-nhat\"><\/span>1. C\u1ea5u h\u00ecnh x\u00e1c th\u1ef1c Email (Quan tr\u1ecdng nh\u1ea5t)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\u0110\u0103ng nh\u1eadp cPanel, t\u00ecm m\u1ee5c <strong>Email<\/strong> -&gt; <strong>Email Deliverability<\/strong>.<\/li>\n<li>Ki\u1ec3m tra c\u00e1c t\u00ean mi\u1ec1n. N\u1ebfu tr\u1ea1ng th\u00e1i SPF, DKIM l\u00e0 &#8220;<strong>Invalid<\/strong>&#8220;, h\u00e3y click <strong>Manage<\/strong> ho\u1eb7c <strong>Install Suggested Records<\/strong> \u0111\u1ec3 h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng thi\u1ebft l\u1eadp b\u1ea3n ghi h\u1ee3p l\u1ec7.<\/li>\n<li>Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p Hosting \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea3n ghi <strong>PTR (Reverse DNS)<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh.<\/li>\n<\/ul>\n<p>Xem th\u00eam:\u00a0<strong><a href=\"https:\/\/interdata.vn\/blog\/cach-cau-hinh-dkim-va-spf-cpanel\/\">C\u1ea5u H\u00ecnh DKIM V\u00e0 SPF cPanel Gi\u00fap Email V\u00e0o Inbox 100%, \u0110\u01a1n Gi\u1ea3n<\/a><\/strong><\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-Kiem-tra-uy-tin-IP-va-Domain\"><\/span>2. Ki\u1ec3m tra uy t\u00edn IP v\u00e0 Domain<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 <a href=\"https:\/\/mxtoolbox.com\/dmarc.aspx\" rel=\"nofollow noopener\" target=\"_blank\"><strong>MXToolbox<\/strong> <\/a>\u0111\u1ec3 ki\u1ec3m tra IP server ho\u1eb7c t\u00ean mi\u1ec1n. N\u1ebfu n\u1eb1m trong danh s\u00e1ch \u0111en, h\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi b\u1ed9 ph\u1eadn k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 g\u1ee1 b\u1ecf.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-40344\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/kiem-tra-uy-tin-domain.png\" alt=\"ki\u1ec3m tra uy t\u00edn domain\" width=\"726\" height=\"237\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/kiem-tra-uy-tin-domain.png 726w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/kiem-tra-uy-tin-domain-300x98.png 300w\" sizes=\"auto, (max-width: 726px) 100vw, 726px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Cau-hinh-Spam-Filters\"><\/span>3. C\u1ea5u h\u00ecnh Spam Filters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong m\u1ee5c <strong>Spam Filters (SpamAssassin)<\/strong> c\u1ee7a cPanel:<\/p>\n<ul>\n<li>B\u1eadt t\u00ednh n\u0103ng <strong>Process New Emails and Mark them as Spam<\/strong>.<\/li>\n<li>C\u00e2n nh\u1eafc b\u1eadt <strong>Automatically Delete New Spam<\/strong> n\u1ebfu b\u1ea1n mu\u1ed1n lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n c\u00e1c email r\u00e1c.<\/li>\n<\/ul>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-40345\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/cau-hinh-spam-email.png\" alt=\"c\u1ea5u h\u00ecnh spam email\" width=\"717\" height=\"305\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/cau-hinh-spam-email.png 717w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/cau-hinh-spam-email-300x128.png 300w\" sizes=\"auto, (max-width: 717px) 100vw, 717px\" \/><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-40346\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Bat-hoac-tat-tinh-nang-theo-nhu-cau.png\" alt=\"B\u1eadt ho\u1eb7c t\u1eaft t\u00ednh n\u0103ng theo nhu c\u1ea7u\" width=\"731\" height=\"453\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Bat-hoac-tat-tinh-nang-theo-nhu-cau.png 731w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/03\/Bat-hoac-tat-tinh-nang-theo-nhu-cau-300x186.png 300w\" sizes=\"auto, (max-width: 731px) 100vw, 731px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"4-Toi-uu-noi-dung-va-danh-sach-gui\"><\/span>4. T\u1ed1i \u01b0u n\u1ed9i dung v\u00e0 danh s\u00e1ch g\u1eedi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>N\u1ed9i dung:<\/strong> Tr\u00e1nh c\u00e1c ti\u00eau \u0111\u1ec1 gi\u1eadt g\u00e2n, kh\u00f4ng vi\u1ebft hoa to\u00e0n b\u1ed9, h\u1ea1n ch\u1ebf \u0111\u00ednh k\u00e8m qu\u00e1 nhi\u1ec1u \u1ea3nh ho\u1eb7c link l\u1ed7i.<\/li>\n<li><strong>Danh s\u00e1ch:<\/strong> Ch\u1ec9 g\u1eedi cho ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 \u0111\u0103ng k\u00fd (Opt-in) v\u00e0 th\u01b0\u1eddng xuy\u00ean l\u00e0m s\u1ea1ch danh s\u00e1ch email.<\/li>\n<\/ul>\n<div class=\"highlight-cta-box\">\n<p><span style=\"color: #ed1c24; font-size: 120%;\"><strong>N\u00e2ng t\u1ea7m hi\u1ec7u n\u0103ng v\u1edbi VPS t\u1ea1i InterData<\/strong><\/span><\/p>\n<p>B\u1ea1n c\u1ea7n quy\u1ec1n qu\u1ea3n tr\u1ecb cao h\u01a1n v\u00e0 h\u1ea1 t\u1ea7ng m\u1ea1nh m\u1ebd? H\u00e3y ch\u1ecdn Thu\u00ea VPS gi\u00e1 r\u1ebb t\u1ea1i InterData. Ch\u00fang t\u00f4i trang b\u1ecb h\u1ea1 t\u1ea7ng \u0111\u1eddi m\u1edbi, NVMe U.2 si\u00eau t\u1ed1c, h\u1ed7 tr\u1ee3 \u0111a d\u1ea1ng H\u0110H, k\u00edch ho\u1ea1t t\u1ef1 \u0111\u1ed9ng v\u00e0 Backup th\u01b0\u1eddng xuy\u00ean.<\/p>\n<a href=\"https:\/\/interdata.vn\/thue-vps\/\" class=\"button secondary is-secondary is-medium\">\n\t\t<span>Tham kh\u1ea3o b\u1ea3ng gi\u00e1 VPS hi\u1ec7u n\u0103ng cao<\/span>\n\t<\/a>\n\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"FAQ-%E2%80%93-Cau-hoi-thuong-gap\"><\/span>FAQ \u2013 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>T\u00f4i \u0111\u00e3 c\u00e0i SPF\/DKIM nh\u01b0ng v\u1eabn v\u00e0o Spam?<\/strong><\/p>\n<p>C\u00f3 th\u1ec3 do n\u1ed9i dung email c\u1ee7a b\u1ea1n ch\u1ee9a c\u00e1c t\u1eeb kh\u00f3a nh\u1ea1y c\u1ea3m. H\u00e3y th\u1eed g\u1eedi m\u1ed9t email ki\u1ec3m tra v\u1edbi n\u1ed9i dung \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 xem k\u1ebft qu\u1ea3.<\/p>\n<p><strong>M\u1ea5t bao l\u00e2u \u0111\u1ec3 b\u1ea3n ghi DNS c\u00f3 hi\u1ec7u l\u1ef1c?<\/strong><\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng m\u1ea5t t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn 48 gi\u1edd ti\u1ebfng \u0111\u1ec3 h\u1ec7 th\u1ed1ng internet c\u1eadp nh\u1eadt \u0111\u1ea7y \u0111\u1ee7 c\u00e1c thay \u0111\u1ed5i tr\u00ean to\u00e0n c\u1ea7u.<\/p>\n<p><strong>C\u00f3 c\u00e1ch n\u00e0o bi\u1ebft ai \u0111ang gi\u1ea3 m\u1ea1o email c\u1ee7a t\u00f4i kh\u00f4ng?<\/strong><\/p>\n<p>C\u1ea5u h\u00ecnh DMARC \u0111\u00fang c\u00e1ch s\u1ebd g\u1eedi v\u1ec1 cho b\u1ea1n c\u00e1c b\u00e1o c\u00e1o chi ti\u1ebft v\u1ec1 nh\u1eefng \u0111\u1ecba ch\u1ec9 IP \u0111ang c\u1ed1 g\u1eafng g\u1eedi th\u01b0 d\u01b0\u1edbi t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n.<span style=\"font-size: 14.4px;\">\u00a0<\/span><\/p>\n<p>Vi\u1ec7c tu\u00e2n th\u1ee7 \u0111\u00fang c\u00e1c quy t\u1eafc k\u1ef9 thu\u1eadt kh\u00f4ng ch\u1ec9 gi\u00fap email c\u1ee7a b\u1ea1n tho\u00e1t kh\u1ecfi b\u1ed9 l\u1ecdc Spam m\u00e0 c\u00f2n gi\u00fap th\u01b0\u01a1ng hi\u1ec7u InterData \u0111\u1ed3ng h\u00e0nh c\u00f9ng s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a b\u1ea1n trong m\u1ecdi chi\u1ebfn d\u1ecbch truy\u1ec1n th\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c email g\u1eedi \u0111i b\u1ecb r\u01a1i v\u00e0o th\u01b0 m\u1ee5c Spam l\u00e0 t\u00ecnh tr\u1ea1ng g\u00e2y \u0111au \u0111\u1ea7u cho nhi\u1ec1u doanh nghi\u1ec7p v\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean website. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u. N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p t\u00ecnh tr\u1ea1ng n\u00e0y, b\u00e0i vi\u1ebft<\/p>\n","protected":false},"author":11,"featured_media":40349,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,149],"tags":[],"class_list":["post-40343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hosting","category-control-panel"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/40343","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=40343"}],"version-history":[{"count":4,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/40343\/revisions"}],"predecessor-version":[{"id":40544,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/40343\/revisions\/40544"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/40349"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=40343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=40343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=40343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}