{"id":89914,"date":"2026-09-17T12:20:37","date_gmt":"2026-09-17T05:20:37","guid":{"rendered":"https:\/\/itsystems.vn\/what-is-business-email-domain-reputation\/"},"modified":"2026-09-17T12:22:45","modified_gmt":"2026-09-17T05:22:45","slug":"what-is-business-email-domain-reputation","status":"publish","type":"post","link":"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/","title":{"rendered":"What is business email domain reputation? Checklist to keep mail out of spam"},"content":{"rendered":"<style id=\"its-five-new-post-clean-layout-en\">\nbody.postid-89914 #brxe-eshixv { display: none !important; }\nbody.postid-89914 #brxe-c544ff { display: block !important; max-width: 1120px !important; margin-left: auto !important; margin-right: auto !important; padding-left: 24px !important; padding-right: 24px !important; }\nbody.postid-89914 #brxe-oxprhc { width: 100% !important; max-width: 920px !important; margin-left: auto !important; margin-right: auto !important; }\nbody.postid-89914 #brxe-bbjupk { width: 100% !important; max-width: 860px !important; height: auto !important; margin-left: auto !important; margin-right: auto !important; display: block !important; }\n@media (max-width: 767px) { body.postid-89914 #brxe-c544ff { padding-left: 16px !important; padding-right: 16px !important; } }\n<\/style>\n<p><strong>Quick answer:<\/strong> Domain reputation is the trust level receivers assign to a domain when it sends email. For a business, it affects whether quotations, contracts, invoices, system notices and customer messages reach the inbox or land in spam. SPF, DKIM and DMARC are essential, but reputation also depends on sending sources, recipient quality, content, compromised accounts and how bounce or spam complaints are monitored.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">The content of the article<\/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 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#What_is_email_domain_reputation\" >What is email domain reputation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Why_SMEs_lose_email_reputation\" >Why SMEs lose email reputation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Email_reputation_checklist\" >Email reputation checklist<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#When_should_email_settings_be_reviewed\" >When should email settings be reviewed?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#How_this_relates_to_Google_Workspace_and_Microsoft_365\" >How this relates to Google Workspace and Microsoft 365<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/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:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Are_SPF_DKIM_and_DMARC_enough_to_avoid_spam\" >Are SPF, DKIM and DMARC enough to avoid spam?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Can_several_systems_send_email_from_the_same_domain\" >Can several systems send email from the same 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:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Does_a_new_domain_have_reputation\" >Does a new domain have reputation?<\/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:\/\/itsystems.vn\/en\/what-is-business-email-domain-reputation\/#Need_to_review_business_email_deliverability\" >Need to review business email deliverability?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_email_domain_reputation\"><\/span>What is email domain reputation?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Email domain reputation is a set of signals used by receiving systems to judge whether messages from a domain are trustworthy. If a domain sends legitimate email, has low bounce rates, is rarely marked as spam and has strong authentication, messages are more likely to reach inboxes. If the same domain is abused for spam, bulk sending or unauthenticated systems, important business email can be blocked even when the message itself is legitimate.<\/p>\n<p>The key point is that reputation belongs to the company domain, not only to the mail platform. Google Workspace, Microsoft 365, website forms, CRM, accounting software, ticket systems and marketing tools may all send from the same domain. One weak source can affect the whole domain.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_SMEs_lose_email_reputation\"><\/span>Why SMEs lose email reputation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Many SMEs add email systems one by one: a website form, a CRM, accounting software, an invoice sender, then a marketing platform. If each system is configured separately without central DNS ownership, SPF may break, DKIM may be missing, DMARC reports may not be watched and deliverability issues start quietly.<\/p>\n<p>Compromised user accounts are another common risk. If an attacker uses a real mailbox to send suspicious mail, domain reputation can decline quickly. MFA, unusual-login alerts and a clear lockout process are therefore part of email reputation management, not only security hygiene.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Email_reputation_checklist\"><\/span>Email reputation checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<thead>\n<tr>\n<th>Area<\/th>\n<th>What to check<\/th>\n<th>Risk if ignored<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SPF<\/td>\n<td>One valid SPF record that includes all approved senders<\/td>\n<td>CRM or website email may look forged<\/td>\n<\/tr>\n<tr>\n<td>DKIM<\/td>\n<td>DKIM enabled for the main email platform and external senders where possible<\/td>\n<td>Receivers cannot verify message integrity<\/td>\n<\/tr>\n<tr>\n<td>DMARC<\/td>\n<td>Policy plus a monitored reporting mailbox<\/td>\n<td>Unknown or spoofed senders remain invisible<\/td>\n<\/tr>\n<tr>\n<td>Sending sources<\/td>\n<td>Website, CRM, accounting, marketing and ticket systems listed<\/td>\n<td>New systems can break authentication<\/td>\n<\/tr>\n<tr>\n<td>Accounts<\/td>\n<td>MFA, strong passwords and leaver lockout<\/td>\n<td>A compromised mailbox can damage the domain<\/td>\n<\/tr>\n<tr>\n<td>Monitoring<\/td>\n<td>Bounce, complaint, blacklist and sending logs<\/td>\n<td>Reputation decline is discovered too late<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"When_should_email_settings_be_reviewed\"><\/span>When should email settings be reviewed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Review email DNS when changing email providers, adding a new sender, running a large campaign, changing website SMTP, receiving complaints that messages go to spam, or seeing unusual login alerts. A quarterly review is also useful because settings that were correct during deployment may drift after months of small changes.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_this_relates_to_Google_Workspace_and_Microsoft_365\"><\/span>How this relates to Google Workspace and Microsoft 365<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"\/en\/google-workspace-for-business\/\">Google Workspace for business<\/a> and <a href=\"\/en\/microsoft-365-for-business\/\">Microsoft 365 for business<\/a> both support authentication and security controls. The business still has to manage DNS, DKIM, DMARC and external senders properly. Cloud email migration without a sending-source process can still lead to spam-folder issues.<\/p>\n<section class=\"its-post-faq\">\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Are_SPF_DKIM_and_DMARC_enough_to_avoid_spam\"><\/span>Are SPF, DKIM and DMARC enough to avoid spam?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. They are the foundation, but sender quality, account security, list quality, bounce rates and complaint rates also matter.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_several_systems_send_email_from_the_same_domain\"><\/span>Can several systems send email from the same domain?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes, but each sender should be documented and authenticated. Otherwise one system can hurt the domain.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_a_new_domain_have_reputation\"><\/span>Does a new domain have reputation?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A new domain has little history, so sending volume should increase gradually after authentication is configured.<\/p>\n<\/section>\n<section class=\"its-post-cta\">\n<h2><span class=\"ez-toc-section\" id=\"Need_to_review_business_email_deliverability\"><\/span>Need to review business email deliverability?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>IT Systems can check DNS, SPF, DKIM, DMARC, sending sources and email security risks before migration or after inbox-delivery problems appear.<\/p>\n<p><a href=\"\/en\/google-workspace-for-business\/\">View Google Workspace service<\/a><\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Business email domain reputation affects inbox delivery. Use this checklist for SPF, DKIM, DMARC, sending sources, account risk and monitoring.<\/p>\n","protected":false},"author":34,"featured_media":89772,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"business email domain reputation","rank_math_title":"What is business email domain reputation? Checklist to keep mail out of spam | IT Systems","rank_math_description":"Business email domain reputation affects inbox delivery. 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