{"id":3417,"date":"2026-03-05T19:55:47","date_gmt":"2026-03-05T14:25:47","guid":{"rendered":"https:wyzard.local\/?p=3417"},"modified":"2026-03-06T10:02:16","modified_gmt":"2026-03-06T04:32:16","slug":"dkim-setup-guide","status":"publish","type":"post","link":"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/","title":{"rendered":"What Is DKIM And How To Set It Up"},"content":{"rendered":"\n<p>If you send outbound or lifecycle email from your company domain, <strong>DKIM<\/strong> is one of the fastest ways to build trust with inbox providers. <strong>DKIM (DomainKeys Identified Mail)<\/strong> authenticates your email by attaching a cryptographic signature that recipients can verify.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-black ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Table of Contents<\/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: #fcfcfc;color:#fcfcfc\" 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: #fcfcfc;color:#fcfcfc\" 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:\/\/wyzard.ai\/blog\/dkim-setup-guide\/#What_DKIM_Is\" >What DKIM Is<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/#What_A_DKIM_Record_Looks_Like\" >What A DKIM Record Looks Like<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/#How_DKIM_Checks_Work\" >How DKIM Checks Work<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/#How_To_Set_Up_DKIM_Step-By-Step\" >How To Set Up DKIM (Step-By-Step)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/#Common_DKIM_Problems\" >Common DKIM Problems<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/#No_Missed_Conversations_With_Wyzardai\" >No Missed Conversations With Wyzard.ai<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_DKIM_Is\"><\/span><strong>What DKIM Is<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>DKIM adds a <strong>digital signature<\/strong> to outgoing messages. Your sending system signs each message with a <strong>private key<\/strong>. Receiving mail servers look up your <strong>public key<\/strong> in DNS and use it to verify the signature. A valid signature signals that the message content stayed intact after it left your sender.<\/p>\n\n\n\n<p>Two outcomes follow from that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Spoofing protection:<\/strong> fewer chances for bad actors to send mail that looks like it came from your domain.<\/li>\n\n\n\n<li><strong>Deliverability support:<\/strong> authenticated mail tends to earn more trust over time, which can help inbox placement.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_A_DKIM_Record_Looks_Like\"><\/span><strong>What A DKIM Record Looks Like<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Your public key is published in DNS as a <strong>TXT Record<\/strong> under a selector. A DKIM Record often looks like this:<\/p>\n\n\n\n<p>selector._domainkey TXT v=DKIM1; k=rsa; p=PUBLIC_KEY_VALUE<\/p>\n\n\n\n<p>Quick breakdown:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>selector is the label your provider assigns (example: us, google, selector1).<\/li>\n\n\n\n<li>_domainkey is the DKIM namespace.<\/li>\n\n\n\n<li>v=DKIM1 declares DKIM.<\/li>\n\n\n\n<li>k=rsa states the key type.<\/li>\n\n\n\n<li>p= holds the base64 public key.<\/li>\n<\/ul>\n\n\n\n<p>Your provider will generate the exact host name and value.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_DKIM_Checks_Work\"><\/span><strong>How DKIM Checks Work<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>You send an email from your domain.<\/li>\n\n\n\n<li>Your mail system adds a DKIM signature header created with the private key.<\/li>\n\n\n\n<li>The recipient\u2019s server finds your DKIM TXT record in DNS using the selector in the message header.<\/li>\n\n\n\n<li>The recipient validates the signature with the public key. A match passes authentication. A mismatch raises filtering risk.<\/li>\n<\/ol>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"3442\" src=\"https:\/\/wyzard.ai\/blog\/wp-content\/uploads\/2026\/03\/DKIM.png\" alt=\"\" class=\"wp-image-3442\" srcset=\"https:\/\/wyzard.ai\/blog\/wp-content\/uploads\/2026\/03\/DKIM.png 1024w, https:\/\/wyzard.ai\/blog\/wp-content\/uploads\/2026\/03\/DKIM-300x225.png 300w, https:\/\/wyzard.ai\/blog\/wp-content\/uploads\/2026\/03\/DKIM-768x576.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_To_Set_Up_DKIM_Step-By-Step\"><\/span><strong>How To Set Up DKIM (Step-By-Step)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Open your email provider\u2019s admin area<\/strong> (Google Workspace, Microsoft 365, or your ESP).<\/li>\n\n\n\n<li><strong>Generate a DKIM key<\/strong> for the domain. Many providers offer a 2048-bit option. Pick that when available.<\/li>\n\n\n\n<li><strong>Copy the DNS details<\/strong> your provider gives you: the selector\/host and the TXT value.<\/li>\n\n\n\n<li><strong>Add the TXT record in your DNS host<\/strong> (Cloudflare, GoDaddy, Route 53, Namecheap, etc.).<\/li>\n\n\n\n<li><strong>Wait for DNS propagation.<\/strong> Some updates appear in minutes. Others take longer, up to 48 hours.<\/li>\n\n\n\n<li><strong>Verify DKIM is passing<\/strong> by sending a test email to a deliverability checker or reviewing headers in a received message.<\/li>\n<\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_DKIM_Problems\"><\/span><strong>Common DKIM Problems<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Selector typos in the DNS host name<\/li>\n\n\n\n<li>TXT value pasted with missing characters or extra quotes<\/li>\n\n\n\n<li>DNS propagation delays<\/li>\n\n\n\n<li>Forwarding paths that modify message content, which can break signature validation<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"No_Missed_Conversations_With_Wyzardai\"><\/span><strong>No Missed Conversations With Wyzard.ai<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>DKIM gaps show up as missed conversations. If follow-ups don\u2019t land, pipeline slows and lead intent fades. <a href=\"https:\/\/wyzard.ai\/blog\/?utm_source=website&amp;utm_medium=blog&amp;utm_campaign=Deliverability_Validation\">Wyzard.ai<\/a> helps teams validate sender readiness by checking DNS authentication signals like DKIM and surfacing setup issues early, so sequences run with confidence. <a href=\"https:\/\/wyzard.ai\/blog\/demo\/?utm_source=website&amp;utm_medium=blog&amp;utm_campaign=Deliverability_Validation\">Learn more at Wyzard.ai<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you send outbound or lifecycle email from your company domain, DKIM is one of the fastest ways to build trust with inbox providers. DKIM (DomainKeys Identified Mail) authenticates your email by attaching a cryptographic signature that recipients can verify. What DKIM Is DKIM adds a digital signature to outgoing messages. Your sending system signs&hellip; <a class=\"more-link\" href=\"https:\/\/wyzard.ai\/blog\/dkim-setup-guide\/\">Continue reading <span class=\"screen-reader-text\">What Is DKIM And How To Set It Up<\/span><\/a><\/p>\n","protected":false},"author":15,"featured_media":3418,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-3417","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DKIM Setup Guide: What DKIM Is and How to Add It to DNS | Wyzard.ai<\/title>\n<meta name=\"description\" content=\"Learn what DKIM is, how DKIM authentication works, and how to publish a DKIM TXT Record in DNS to protect your domain and improve email deliverability.\" \/>\n<meta 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