{"id":99895,"date":"2026-01-28T21:18:02","date_gmt":"2026-01-28T21:18:02","guid":{"rendered":"https:\/\/alluresecurity.com\/?post_type=glossary&#038;p=99895"},"modified":"2026-04-10T21:15:08","modified_gmt":"2026-04-11T01:15:08","slug":"dkim-domainkeys-identified-mail","status":"publish","type":"glossary","link":"https:\/\/alluresecurity.com\/glossary\/dkim\/","title":{"rendered":"DKIM (DomainKeys Identified Mail)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"99895\" class=\"elementor elementor-99895\" data-elementor-post-type=\"glossary\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6cd0d928 e-flex e-con-boxed e-con e-parent\" data-id=\"6cd0d928\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6fc93753 e-con-full e-flex e-con e-child\" data-id=\"6fc93753\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-3a1742fc animated-fast e-con-full e-flex e-con e-child\" data-id=\"3a1742fc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-462f3040 elementor-widget elementor-widget-heading\" data-id=\"462f3040\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is DKIM (DomainKeys Identified Mail)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1cff1e39 elementor-widget elementor-widget-text-editor\" data-id=\"1cff1e39\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>DKIM works by adding a digital signature to outgoing emails using cryptographic keys. The sending mail server signs outgoing messages with a private key, and the signature is added to the email header. Receiving mail servers can then verify this signature using a public key published in the sender&#8217;s DNS records. If the signature validates, the recipient knows the email genuinely came from the claimed domain and the content wasn&#8217;t modified. DKIM is one component of a comprehensive email authentication strategy, working alongside SPF and DMARC. While DKIM doesn&#8217;t prevent all email spoofing (attackers can still use different domains), it provides strong authentication for legitimate mail and helps build sender reputation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68579938 elementor-widget elementor-widget-heading\" data-id=\"68579938\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Business Impact<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9fc35 elementor-widget elementor-widget-text-editor\" data-id=\"c9fc35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Implementing DKIM improves email deliverability by proving your organization&#8217;s emails are legitimate, reducing the chance they&#8217;ll be marked as spam. For security, DKIM helps protect your domain reputation by making it harder for attackers to successfully spoof your domain. However, DKIM alone doesn&#8217;t prevent all abuse\u2014attackers can still send phishing emails from lookalike domains with valid DKIM signatures. Organizations must combine DKIM with other authentication methods and monitor for domains that impersonate their brand.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12e2b560 elementor-widget elementor-widget-heading\" data-id=\"12e2b560\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Allure Security's Approach<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-252dc88d elementor-widget elementor-widget-text-editor\" data-id=\"252dc88d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>While DKIM protects your outbound email, comprehensive email security requires monitoring for lookalike domains and email addresses used to impersonate your organization. Even perfect DKIM implementation doesn&#8217;t stop attackers from using similar domains (example.com vs examp1e.com) to fool recipients.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"template":"","meta":{"_acf_changed":false,"content-type":""},"class_list":["post-99895","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>DKIM (DomainKeys Identified Mail) - Allure Security<\/title>\n<meta name=\"description\" content=\"What is DKIM (DomainKeys Identified Mail)? Learn how this email authentication protocol helps prevent spoofing by verifying message integrity.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alluresecurity.com\/glossary\/dkim\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DKIM (DomainKeys Identified Mail)\" \/>\n<meta property=\"og:description\" content=\"What is DKIM (DomainKeys Identified Mail)? Learn how this email authentication protocol helps prevent spoofing by verifying message integrity.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/alluresecurity.com\/glossary\/dkim\/\" \/>\n<meta property=\"og:site_name\" content=\"Allure Security\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-11T01:15:08+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@AllureSecurity\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/glossary\\\/dkim\\\/\",\"url\":\"https:\\\/\\\/alluresecurity.com\\\/glossary\\\/dkim\\\/\",\"name\":\"DKIM (DomainKeys Identified Mail) - Allure Security\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/#website\"},\"datePublished\":\"2026-01-28T21:18:02+00:00\",\"dateModified\":\"2026-04-11T01:15:08+00:00\",\"description\":\"What is DKIM (DomainKeys Identified Mail)? Learn how this email authentication protocol helps prevent spoofing by verifying message integrity.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/glossary\\\/dkim\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/alluresecurity.com\\\/glossary\\\/dkim\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/glossary\\\/dkim\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/alluresecurity.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Glossary\",\"item\":\"https:\\\/\\\/alluresecurity.com\\\/glossary\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"DKIM (DomainKeys Identified Mail)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/#website\",\"url\":\"https:\\\/\\\/alluresecurity.com\\\/\",\"name\":\"Allure Security\",\"description\":\"Online Brand Protection\",\"publisher\":{\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/alluresecurity.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/#organization\",\"name\":\"Allure Security\",\"url\":\"https:\\\/\\\/alluresecurity.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/alluresecurity.com\\\/wp-content\\\/uploads\\\/2020\\\/02\\\/AS_Site_Logos-Purple-150dpi.png\",\"contentUrl\":\"https:\\\/\\\/alluresecurity.com\\\/wp-content\\\/uploads\\\/2020\\\/02\\\/AS_Site_Logos-Purple-150dpi.png\",\"width\":400,\"height\":150,\"caption\":\"Allure Security\"},\"image\":{\"@id\":\"https:\\\/\\\/alluresecurity.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/x.com\\\/AllureSecurity\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/alluresecurity\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"DKIM (DomainKeys Identified Mail) - Allure Security","description":"What is DKIM (DomainKeys Identified Mail)? Learn how this email authentication protocol helps prevent spoofing by verifying message integrity.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/alluresecurity.com\/glossary\/dkim\/","og_locale":"en_US","og_type":"article","og_title":"DKIM (DomainKeys Identified Mail)","og_description":"What is DKIM (DomainKeys Identified Mail)? Learn how this email authentication protocol helps prevent spoofing by verifying message integrity.","og_url":"https:\/\/alluresecurity.com\/glossary\/dkim\/","og_site_name":"Allure Security","article_modified_time":"2026-04-11T01:15:08+00:00","twitter_card":"summary_large_image","twitter_site":"@AllureSecurity","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/alluresecurity.com\/glossary\/dkim\/","url":"https:\/\/alluresecurity.com\/glossary\/dkim\/","name":"DKIM (DomainKeys Identified Mail) - Allure Security","isPartOf":{"@id":"https:\/\/alluresecurity.com\/#website"},"datePublished":"2026-01-28T21:18:02+00:00","dateModified":"2026-04-11T01:15:08+00:00","description":"What is DKIM (DomainKeys Identified Mail)? Learn how this email authentication protocol helps prevent spoofing by verifying message integrity.","breadcrumb":{"@id":"https:\/\/alluresecurity.com\/glossary\/dkim\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/alluresecurity.com\/glossary\/dkim\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/alluresecurity.com\/glossary\/dkim\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/alluresecurity.com\/"},{"@type":"ListItem","position":2,"name":"Glossary","item":"https:\/\/alluresecurity.com\/glossary\/"},{"@type":"ListItem","position":3,"name":"DKIM (DomainKeys Identified Mail)"}]},{"@type":"WebSite","@id":"https:\/\/alluresecurity.com\/#website","url":"https:\/\/alluresecurity.com\/","name":"Allure Security","description":"Online Brand Protection","publisher":{"@id":"https:\/\/alluresecurity.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/alluresecurity.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/alluresecurity.com\/#organization","name":"Allure Security","url":"https:\/\/alluresecurity.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/alluresecurity.com\/#\/schema\/logo\/image\/","url":"https:\/\/alluresecurity.com\/wp-content\/uploads\/2020\/02\/AS_Site_Logos-Purple-150dpi.png","contentUrl":"https:\/\/alluresecurity.com\/wp-content\/uploads\/2020\/02\/AS_Site_Logos-Purple-150dpi.png","width":400,"height":150,"caption":"Allure Security"},"image":{"@id":"https:\/\/alluresecurity.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/x.com\/AllureSecurity","https:\/\/www.linkedin.com\/company\/alluresecurity\/"]}]}},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/alluresecurity.com\/wp-json\/wp\/v2\/glossary\/99895","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alluresecurity.com\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/alluresecurity.com\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":5,"href":"https:\/\/alluresecurity.com\/wp-json\/wp\/v2\/glossary\/99895\/revisions"}],"predecessor-version":[{"id":104531,"href":"https:\/\/alluresecurity.com\/wp-json\/wp\/v2\/glossary\/99895\/revisions\/104531"}],"wp:attachment":[{"href":"https:\/\/alluresecurity.com\/wp-json\/wp\/v2\/media?parent=99895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}