{"id":725,"date":"2024-01-25T12:40:57","date_gmt":"2024-01-25T07:10:57","guid":{"rendered":"http:\/\/threatcop.com\/blog\/?p=725"},"modified":"2026-04-24T11:36:02","modified_gmt":"2026-04-24T06:06:02","slug":"guide-to-configure-dkim","status":"publish","type":"post","link":"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/","title":{"rendered":"Configuring DKIM for Enhanced Email Security"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">We have always heard about how email authentication protocols like SPF, DKIM, and DMARC can help in enhancing email security. But, have you ever given thought to <b>how these individual protocols are implemented<\/b>? There are always&nbsp;<b>instances where technical complications in implementation can lead to several problems<\/b>. To prevent common mistakes and their damaging repercussions, let\u2019s understand&nbsp;<b>how to configure DKIM properly<\/b>.<\/span><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 ez-toc-wrap-center 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\">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: #414141;color:#414141\" 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: #414141;color:#414141\" 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:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#Book_a_Free_Demo_Call_with_Our_Expert\" >Book a Free Demo Call with Our Expert<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#HOW_TO_CREATE_A_DKIM_RECORD_FOR_PROPER_CONFIGURATION\" >HOW TO CREATE A DKIM RECORD FOR PROPER CONFIGURATION?<\/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:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#WHAT_IS_THE_DKIM_SELECTOR\" >WHAT IS THE DKIM SELECTOR?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#DKIM_TXT_RECORD\" >DKIM TXT RECORD<\/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:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#CONFIGURE_DKIM_BY_FOLLOWING_THE_BEST_PRACTICES\" >CONFIGURE DKIM BY FOLLOWING THE BEST PRACTICES<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#Book_a_Free_Demo_Call_with_Our_Expert-2\" >Book a Free Demo Call with Our Expert<\/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:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#1_DKIM_ALIGNMENT\" >1. DKIM ALIGNMENT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#2_RECORD_DKIM_PUBLIC_KEY_IN_DNS\" >2. RECORD DKIM PUBLIC KEY IN DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#3_AVOID_WIDESPREAD_KEY_SHARING\" >3. AVOID WIDESPREAD KEY SHARING<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#4_KEY_ROTATION\" >4. KEY ROTATION<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#5_KEY_STORAGE\" >5. KEY STORAGE<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/threatcop.com\/blog\/guide-to-configure-dkim\/#DMARC_SPF_AND_DKIM_SHOULD_BE_USED_TOGETHER\" >DMARC, SPF, AND DKIM SHOULD BE USED TOGETHER<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><b>DomainKeys Identified Mail<\/b>&nbsp;(<span style=\"color: #183994;\"><a style=\"color: #183994;\" href=\"https:\/\/threatcop.com\/blog\/dkim\/\"><strong>DKIM<\/strong><\/a><\/span>) is an email authentication protocol that&nbsp;<b>effectively detects if an email has been sent from a forged sender\u2019s address<\/b>. It allows the receiver to verify whether or not an email sent from a specific domain has been authorized by that domain\u2019s owner.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><b>DKIM affixes a digital signature to every outgoing email<\/b><span style=\"font-weight: 400;\">. The receiving server can then verify the signature using the sender\u2019s public key published in the DNS. A valid DKIM signature helps in making sure that certain parts of the email have not been modified since the signature was imprinted. The details of the <\/span><b>public key are specified in the DKIM record<\/b><span style=\"font-weight: 400;\">.<\/span><\/span><\/p>\n\n\n\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>Threatcop \u2013 Book a Free Demo<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Outfit:wght@300;400;500;600;700&#038;display=swap\" rel=\"stylesheet\">\n<style>\n  .tc-wrap , .tc-wrap ::before, .tc-wrap ::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .tc-wrap { font-family: 'Outfit', sans-serif; width: 100%; display: flex; justify-content: center; padding: 20px 10px; }\n  .tc-card { width: 100%; max-width: 820px; background: #fff; border-radius: 20px; overflow: hidden; box-shadow: 0 20px 60px rgba(24,57,148,0.13), 0 4px 16px rgba(24,57,148,0.07); display: flex; flex-direction: row; }\n  .tc-left { background: linear-gradient(160deg, #1e44b0 0%, #183994 40%, #0e2570 100%); width: 320px; flex-shrink: 0; padding: 40px 32px; 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-webkit-text-fill-color: #c0ccdf !important; opacity: 1; }\n  .tc-wrap input:focus { border-color: #183994 !important; background: #fff !important; box-shadow: 0 0 0 3.5px rgba(24,57,148,0.1) !important; }\n  .tc-phone-row { display: flex; gap: 8px; }\n  .tc-flag-select { position: relative; flex-shrink: 0; }\n  .tc-flag-select select { appearance: none !important; -webkit-appearance: none !important; border: 1.5px solid #e2e9f7 !important; border-radius: 10px !important; padding: 9px 26px 9px 12px !important; font-family: 'Outfit', sans-serif !important; font-size: 14px !important; font-weight: 500 !important; color: #1e2d50 !important; background: #f8faff !important; outline: none !important; cursor: pointer; width: 100px !important; transition: border-color .2s, box-shadow .2s; }\n  .tc-flag-select select:focus { border-color: #183994 !important; box-shadow: 0 0 0 3.5px rgba(24,57,148,0.1) !important; }\n  .tc-flag-select::after { content: ''; position: absolute; right: 10px; top: 50%; 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color: #fff !important; }\n  .tc-btn-submit:active { transform: translateY(0); }\n  .tc-btn-submit svg { width: 16px; height: 16px; stroke: #fff; stroke-width: 2.2; fill: none; flex-shrink: 0; }\n  .tc-trust { margin-top: 10px !important; display: flex !important; align-items: center !important; justify-content: center !important; gap: 5px; font-size: 13px !important; color: #a0b0cc !important; font-family: 'Outfit', sans-serif !important; }\n  .tc-trust svg { width: 12px; height: 12px; stroke: #a0b0cc; stroke-width: 2; fill: none; flex-shrink: 0; }\n  @media (max-width: 680px) {\n    .tc-card { flex-direction: column !important; }\n    .tc-left { width: 100% !important; padding: 28px 24px 24px !important; }\n    .tc-right { padding: 24px 20px !important; }\n    .tc-grid { grid-template-columns: 1fr !important; }\n    .tc-field.full { grid-column: 1 !important; }\n  }\n<\/style>\n\n<div class=\"tc-wrap\">\n  <div class=\"tc-card\">\n    <div class=\"tc-left\">\n      <div class=\"tc-panel-inner\">\n        <div class=\"tc-badge\">\n          <span class=\"tc-badge-dot\"><\/span>\n          People Security Management\n        <\/div>\n        <h2><span class=\"ez-toc-section\" id=\"Book_a_Free_Demo_Call_with_Our_Expert\"><\/span>Book a Free<br><em>Demo Call<\/em><br>with Our Expert<span class=\"ez-toc-section-end\"><\/span><\/h2>\n        <p class=\"tc-sub\">Discover how Threatcop protects your workforce from modern cyber threats.<\/p>\n      <\/div>\n    <\/div>\n    <div class=\"tc-right\">\n      <div class=\"tc-form-title\">Your Details<\/div>\n      <form action=\"https:\/\/threatcop.com\/thankyou-blog\" method=\"get\" target=\"_blank\">\n        <input type=\"hidden\" name=\"BlogForm\" value=\"BlogForm\">\n        <input type=\"hidden\" name=\"PageSource\" id=\"tc-page-source\" value=\"\">\n        <div class=\"tc-grid\">\n          <div class=\"tc-field\">\n            <label>Full Name<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"text\" name=\"FullName\" placeholder=\"Jane Smith\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><circle cx=\"12\" cy=\"8\" r=\"4\"><\/circle><path d=\"M4 20c0-4 3.58-7 8-7s8 3 8 7\"><\/path><\/svg>\n            <\/div>\n          <\/div>\n          <div class=\"tc-field\">\n            <label>Company Name<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"text\" name=\"CompanyName\" placeholder=\"Acme Corp\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><rect x=\"3\" y=\"3\" width=\"18\" height=\"18\" rx=\"2\"><\/rect><path d=\"M9 3v18M3 9h6M3 15h6\"><\/path><\/svg>\n            <\/div>\n          <\/div>\n          <div class=\"tc-field full\">\n            <label>Corporate Email<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"email\" name=\"email\" placeholder=\"jane@yourcompany.com\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><rect x=\"2\" y=\"4\" width=\"20\" height=\"16\" rx=\"2\"><\/rect><polyline points=\"2,4 12,13 22,4\"><\/polyline><\/svg>\n            <\/div>\n          <\/div>\n          <div class=\"tc-field full\">\n            <label>Phone Number<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"number\" name=\"Phone\" placeholder=\"98765 43210\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><path d=\"M22 16.92v3a2 2 0 01-2.18 2A19.79 19.79 0 013.09 4.18 2 2 0 015.07 2h3a2 2 0 012 1.72c.13.96.36 1.9.71 2.81a2 2 0 01-.45 2.11L9.09 9.91a16 16 0 006 6l1.27-1.27a2 2 0 012.11-.45c.91.35 1.85.58 2.81.71A2 2 0 0122 16.92z\"><\/path><\/svg>\n            <\/div>\n          <\/div>\n        <\/div>\n        <button type=\"submit\" class=\"tc-btn-submit\">\n          <svg viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><path d=\"M22 2L11 13M22 2L15 22l-4-9-9-4 20-7z\"><\/path><\/svg>\n          Book My Free Demo\n        <\/button>\n        <div class=\"tc-trust\">\n          <svg viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><rect x=\"3\" y=\"11\" width=\"18\" height=\"11\" rx=\"2\"><\/rect><path d=\"M7 11V7a5 5 0 0110 0v4\"><\/path><\/svg>\n          Your data is safe &amp; never shared with third parties\n        <\/div>\n      <\/form>\n    <\/div>\n  <\/div>\n<\/div>\n<script>document.getElementById('tc-page-source').value = window.location.href;<\/script>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">Under the new policy guidelines set forth by leading technology companies, strict compliance with DKIM standards has become more critical than ever for organizations, especially those involved in bulk email sending. The updated guidelines emphasize the importance of correctly configuring DKIM signatures for email authentication. This means ensuring that the digital signature is not only valid but also aligns with the latest security practices to prevent tampering or forgery. Adherence to these enhanced DKIM guidelines is a crucial step in safeguarding email communications, enhancing the sender&#8217;s domain reputation, and improving overall email deliverability in the increasingly vigilant digital landscape.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HOW_TO_CREATE_A_DKIM_RECORD_FOR_PROPER_CONFIGURATION\"><\/span><span style=\"color: #000000;\"><strong>HOW TO CREATE A DKIM RECORD FOR PROPER CONFIGURATION?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Setting DKIM record properly is an essential element to configure DKIM properly. A DKIM record is set through the following steps.<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"color: #000000;\">Pick a&nbsp;<b>DKIM selector<\/b><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\">Generate a&nbsp;<b>private-public key pair<\/b><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\">Use&nbsp;<b>DKIM TXT Record<\/b>&nbsp;to publish a selector and publish key<\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Tokenize<\/b>&nbsp;every&nbsp;<b>outbound email<\/b><\/span><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"WHAT_IS_THE_DKIM_SELECTOR\"><\/span><span style=\"color: #000000;\"><strong>WHAT IS THE DKIM SELECTOR?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">A selector is said to specify an attribute for a signature, which is recorded in the DKIM header field. The&nbsp;<b>DKIM selector is specified using the \u201c<\/b><b><i>s=<\/i><\/b><b>\u201d tag, which is stored in the DKIM-signature header<\/b>. A query is generated on the receiver end DNS using&nbsp;<b>\u201c<\/b><b><i>selector<\/i><\/b><b>\u201d._domainkey.yourdomain.<\/b><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">If one uses \u201c<b><i>krat22<\/i><\/b>\u201d as a selector, then the domain name will become \u201c<b><i>krat22._domain.example.com<\/i><\/b>\u201d.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DKIM_TXT_RECORD\"><\/span><span style=\"color: #000000;\"><strong>DKIM TXT RECORD<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">In the DKIM TXT record, the \u201c<i>p=<\/i>\u201d tag specifies the public key that is stored in the DNS. The format for storing keys is given below.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><b><i>v=DKIM1; p=Organization\u2019sPublicKey<\/i><\/b><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CONFIGURE_DKIM_BY_FOLLOWING_THE_BEST_PRACTICES\"><\/span><span style=\"color: #000000;\"><strong>CONFIGURE DKIM BY FOLLOWING THE BEST PRACTICES<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Working alongside&nbsp;<span style=\"color: #183994;\"><strong><a style=\"color: #183994;\" href=\"https:\/\/threatcop.com\/blog\/spf-authentication\/\">Sender Policy Framework<\/a><\/strong><\/span>&nbsp;(SPF) and Domain-based Message Authentication Reporting and Conformance&nbsp;(<span style=\"color: #183994;\"><a style=\"color: #183994;\" href=\"https:\/\/threatcop.com\/blog\/what-is-dmarc\/\"><b>DMARC<\/b><\/a><\/span>), DKIM prevents&nbsp;<b>malicious actors from spoofing your domains and sending fraudulent emails on your behalf<\/b>. Serving as the best defense against spear-phishing and spoofing, DKIM is a boon to email security.<\/span><\/p>\n\n\n\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>Threatcop \u2013 Book a Free Demo<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Outfit:wght@300;400;500;600;700&#038;display=swap\" rel=\"stylesheet\">\n<style>\n  .tc-wrap , .tc-wrap ::before, .tc-wrap ::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .tc-wrap { font-family: 'Outfit', sans-serif; width: 100%; display: flex; justify-content: center; padding: 20px 10px; }\n  .tc-card { width: 100%; max-width: 820px; background: #fff; border-radius: 20px; overflow: hidden; box-shadow: 0 20px 60px rgba(24,57,148,0.13), 0 4px 16px rgba(24,57,148,0.07); display: flex; flex-direction: row; }\n  .tc-left { background: linear-gradient(160deg, #1e44b0 0%, #183994 40%, #0e2570 100%); width: 320px; flex-shrink: 0; padding: 40px 32px; display: flex; 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}\n  .tc-btn-submit svg { width: 16px; height: 16px; stroke: #fff; stroke-width: 2.2; fill: none; flex-shrink: 0; }\n  .tc-trust { margin-top: 10px !important; display: flex !important; align-items: center !important; justify-content: center !important; gap: 5px; font-size: 13px !important; color: #a0b0cc !important; font-family: 'Outfit', sans-serif !important; }\n  .tc-trust svg { width: 12px; height: 12px; stroke: #a0b0cc; stroke-width: 2; fill: none; flex-shrink: 0; }\n  @media (max-width: 680px) {\n    .tc-card { flex-direction: column !important; }\n    .tc-left { width: 100% !important; padding: 28px 24px 24px !important; }\n    .tc-right { padding: 24px 20px !important; }\n    .tc-grid { grid-template-columns: 1fr !important; }\n    .tc-field.full { grid-column: 1 !important; }\n  }\n<\/style>\n\n<div class=\"tc-wrap\">\n  <div class=\"tc-card\">\n    <div class=\"tc-left\">\n      <div class=\"tc-panel-inner\">\n        <div class=\"tc-badge\">\n          <span class=\"tc-badge-dot\"><\/span>\n          People Security Management\n        <\/div>\n        <h2><span class=\"ez-toc-section\" id=\"Book_a_Free_Demo_Call_with_Our_Expert-2\"><\/span>Book a Free<br><em>Demo Call<\/em><br>with Our Expert<span class=\"ez-toc-section-end\"><\/span><\/h2>\n        <p class=\"tc-sub\">Discover how Threatcop protects your workforce from modern cyber threats.<\/p>\n      <\/div>\n    <\/div>\n    <div class=\"tc-right\">\n      <div class=\"tc-form-title\">Your Details<\/div>\n      <form action=\"https:\/\/threatcop.com\/thankyou-blog\" method=\"get\" target=\"_blank\">\n        <input type=\"hidden\" name=\"BlogForm\" value=\"BlogForm\">\n        <input type=\"hidden\" name=\"PageSource\" id=\"tc-page-source\" value=\"\">\n        <div class=\"tc-grid\">\n          <div class=\"tc-field\">\n            <label>Full Name<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"text\" name=\"FullName\" placeholder=\"Jane Smith\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><circle cx=\"12\" cy=\"8\" r=\"4\"><\/circle><path d=\"M4 20c0-4 3.58-7 8-7s8 3 8 7\"><\/path><\/svg>\n            <\/div>\n          <\/div>\n          <div class=\"tc-field\">\n            <label>Company Name<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"text\" name=\"CompanyName\" placeholder=\"Acme Corp\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><rect x=\"3\" y=\"3\" width=\"18\" height=\"18\" rx=\"2\"><\/rect><path d=\"M9 3v18M3 9h6M3 15h6\"><\/path><\/svg>\n            <\/div>\n          <\/div>\n          <div class=\"tc-field full\">\n            <label>Corporate Email<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"email\" name=\"email\" placeholder=\"jane@yourcompany.com\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><rect x=\"2\" y=\"4\" width=\"20\" height=\"16\" rx=\"2\"><\/rect><polyline points=\"2,4 12,13 22,4\"><\/polyline><\/svg>\n            <\/div>\n          <\/div>\n          <div class=\"tc-field full\">\n            <label>Phone Number<\/label>\n            <div class=\"tc-input-wrap\">\n              <input type=\"number\" name=\"Phone\" placeholder=\"98765 43210\" required=\"\">\n              <svg class=\"tc-fi\" viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><path d=\"M22 16.92v3a2 2 0 01-2.18 2A19.79 19.79 0 013.09 4.18 2 2 0 015.07 2h3a2 2 0 012 1.72c.13.96.36 1.9.71 2.81a2 2 0 01-.45 2.11L9.09 9.91a16 16 0 006 6l1.27-1.27a2 2 0 012.11-.45c.91.35 1.85.58 2.81.71A2 2 0 0122 16.92z\"><\/path><\/svg>\n            <\/div>\n          <\/div>\n        <\/div>\n        <button type=\"submit\" class=\"tc-btn-submit\">\n          <svg viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><path d=\"M22 2L11 13M22 2L15 22l-4-9-9-4 20-7z\"><\/path><\/svg>\n          Book My Free Demo\n        <\/button>\n        <div class=\"tc-trust\">\n          <svg viewBox=\"0 0 24 24\" stroke-linecap=\"round\"><rect x=\"3\" y=\"11\" width=\"18\" height=\"11\" rx=\"2\"><\/rect><path d=\"M7 11V7a5 5 0 0110 0v4\"><\/path><\/svg>\n          Your data is safe &amp; never shared with third parties\n        <\/div>\n      <\/form>\n    <\/div>\n  <\/div>\n<\/div>\n<script>document.getElementById('tc-page-source').value = window.location.href;<\/script>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">There are several instances where DKIM fails the check even when the email is legitimate. If this happens, even your legitimate emails will sometimes fail to deliver, causing you a lot of trouble. So, one must carefully implement DKIM and avoid making any mistakes. There are some focus points that are taken care of while configuring DKIM. They are listed below.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_DKIM_ALIGNMENT\"><\/span><span style=\"color: #000000;\"><strong>1. DKIM ALIGNMENT<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">The most common mistake in DKIM implementation is the signature alignment of senders and receivers. When DKIM alignment fails, it can adversely affect deliverability and even legitimate emails can land in the spam folder or be blocked entirely.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><i>\u201cThe \u2018<\/i><b><i>d=\u2019<\/i><\/b><i>&nbsp;value in the&nbsp;<\/i><b><i>Header From<\/i><\/b><i>&nbsp;address&nbsp;<\/i><b><i>must match<\/i><\/b><i>&nbsp;the&nbsp;<\/i><b><i>d=<\/i><\/b><i>&nbsp;value in the&nbsp;<\/i><b><i>DKIM signature<\/i><\/b><i>.\u201d<\/i><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">An organization must make sure that all their emails are signed with one DKIM signature and that they are aligned correctly. Thus, it is important to configure DKIM.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_RECORD_DKIM_PUBLIC_KEY_IN_DNS\"><\/span><span style=\"color: #000000;\"><strong>2. RECORD DKIM PUBLIC KEY IN DNS<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">The&nbsp;<b>DKIM public key is published as a DNS record<\/b>. If the DKIM public key record is incorrect in the DNS, then it can cause problems during the authentication of your outbound emails.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">This&nbsp;<b>public key can span across several lines<\/b>&nbsp;and consist of a&nbsp;<b>combination of numbers, special characters, and both uppercase and lowercase letters<\/b>. It can be tricky to manually type this record as it is while publishing the key in the DNS.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">For this reason,&nbsp;<b>most domain owners copy-paste the key into the configuration window<\/b>. During this process, they often inadvertently add newline characters or whitespace, which breaks the public key.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">If you want your organization\u2019s emails to smoothly undergo and pass DKIM authentication, it is&nbsp;<b>essential to make sure that your DKIM public key is published correctly in the DNS<\/b>.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_AVOID_WIDESPREAD_KEY_SHARING\"><\/span><span style=\"color: #000000;\"><strong>3. AVOID WIDESPREAD KEY SHARING<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Every unique mail stream belonging to an&nbsp;<b>organization or brand entity<\/b>&nbsp;should&nbsp;<b>have its own dedicated DKIM key<\/b>.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">DKIM is a little complex and proper key management can be time-consuming and tedious. That\u2019s why&nbsp;<b>domain owners often use the same key across many of their brands and mail streams, which is another one of the biggest DKIM mistakes<\/b>.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">A simplified configuration of shared keys can make implementation easier, which creates a critical vulnerability. That\u2019s why&nbsp;<b>organizations must avoid widespread sharing of a single DKIM record<\/b>, rather&nbsp;<b>they should make separate DKIM records for each domain or mail service provider<\/b>.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_KEY_ROTATION\"><\/span><span style=\"color: #000000;\"><strong>4. KEY ROTATION<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Key rotation refers to changing the&nbsp;<b>DKIM key regularly, that is 3 to 4 times in a year<\/b>. Key rotation helps you to make sure that even if a DKIM key is compromised, it can only be used for a short time. Once the existing key is rotated out and replaced by a new key, it becomes useless and cannot be exploited by hackers anymore.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_KEY_STORAGE\"><\/span><span style=\"color: #000000;\"><strong>5. KEY STORAGE<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Every&nbsp;<b>DKIM key that is created and configured by the organization\u2019s administrator<\/b>&nbsp;is stored in a file. Thus, security becomes extremely important for all the storage where DKIM is saved. The&nbsp;<b>best practice to secure the storage is encryption of a database<\/b>.&nbsp; Also, this becomes a crucial part of key management and distribution.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DMARC_SPF_AND_DKIM_SHOULD_BE_USED_TOGETHER\"><\/span><span style=\"color: #000000;\"><strong>DMARC, SPF, AND DKIM SHOULD BE USED TOGETHER<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Email spoofing and business email compromise are the leading cause of email-based attacks around the world.&nbsp;<b>SPF, DKIM, and DMARC are used as email authentication standards<\/b>&nbsp;to prevent such attacks. But the problem is that&nbsp;<b>only 30% of the organizations implement all of them properly<\/b>. There is a&nbsp;<b>possibility of mistakes while implementing DMARC<\/b>, so one should&nbsp;<b>avoid making these mistakes<\/b>. Then,&nbsp;<i>what should be the best solution to implement these protocols?<\/i><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><a href=\"https:\/\/threatcop.com\/tdmarc?utm_source=Threatcop&amp;utm_medium=Threatcop+Blog&amp;utm_campaign=Configure+DKIM\"><b><span style=\"color: #183994;\">TDMARC<\/span><\/b><\/a>&nbsp;is a software-as-a-service-based platform that provides a <b>highly interactive way to implement the DMARC policies<\/b>. This tool also allows organizations to set SPF records. This feature is known as&nbsp;<b>smart SPF<\/b>, which implies that a user can modify and create SPF records easily. TDMARC provides a platform for users to set SPF records without going to DNS.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><strong>TDMARC<\/strong>&nbsp;provides organizations with a choice of&nbsp;<b>changing and modifying the policies of DMARC<\/b>. It also allows the administrators&nbsp;<b>to view all the domains and email service providers<\/b>&nbsp;that are associated with their organization. This&nbsp;<b>tool allows users to view their DKIM records and ensure that<\/b>&nbsp;<b>DKIM is properly configured<\/b>.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><em><strong>Editor\u2019s Note:&nbsp;<\/strong>This post was originally published in March 10, 2022 and has been partially revamped and updated for accuracy and comprehensiveness.<\/em><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We have always heard about how email authentication protocols like SPF, DKIM, and DMARC can help in enhancing email security. But, have you ever given thought to how these individual protocols are implemented? There are always&nbsp;instances where technical complications in implementation can lead to several problems. To prevent common mistakes and their damaging repercussions, let\u2019s [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":921,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46,45],"tags":[],"class_list":["post-725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dmarc","category-email-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Guide To Configure DKIM To Ensure Email Security<\/title>\n<meta name=\"description\" content=\"DKIM is an email authentication protocol that\u00a0effectively detects if an email has been sent from a forged sender\u2019s address.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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