{"id":11499,"date":"2015-02-10T16:52:35","date_gmt":"2015-02-10T15:52:35","guid":{"rendered":"https:\/\/www.saasweb.agency\/blog\/dkim-verifier-extension-for-thunderbird\/"},"modified":"2026-10-27T08:27:25","modified_gmt":"2026-10-27T07:27:25","slug":"dkim-verifier-extension-for-thunderbird","status":"publish","type":"post","link":"https:\/\/www.saasweb.agency\/en\/blog\/dkim-verifier-extension-for-thunderbird\/","title":{"rendered":"DKIM Verifier Extension for Thunderbird"},"content":{"rendered":"<p>DKIM (DomainKeys Identified Mail) describes a method to verify the authenticity of an email sender system. In other words: was the email from person_X@companydomain.tld actually sent from companydomain.tld? <\/p>\n<p>For this to work, the email is signed by the sender&#8217;s email system (asymmetric encryption private\/public). The recipient can then verify the authenticity of the sender&#8217;s email system using a public key. The public key is published as a TXT extension in the domain&#8217;s DNS record.  <\/p>\n<p>This rather simple verification increases trust, especially with known communication participants, as it can quickly expose a crude sender forgery (From: field); however, it should always be ensured that the email (including the sender domain) appears known\/trustworthy. This is because even malicious emails can be certified with DKIM (if the domain is managed by fraudsters).<br \/>\n<u>Example:<\/u><\/p>\n<ul>\n<li>Mail From: eBay, Subject: Update your login credentials<\/li>\n<li>DKIM display in Thunderbird: DKIM valid (signed by phishing.anonymous-domain.com)<\/li>\n<\/ul>\n<p>Although the DKIM check indicates a correct DKIM signature, it is to be expected that eBay does not send its emails from a domain named &#8220;phishing.anonymous-domain.com&#8221;..<\/p>\n<p>Here is the link to the add-on page in the Mozilla Repository:<br \/>\n<a href=\"https:\/\/addons.mozilla.org\/de\/thunderbird\/addon\/dkim-verifier\/\" title=\"DKIM Verifier\" target=\"_blank\" rel=\"noopener\">https:\/\/addons.mozilla.org\/de\/thunderbird\/addon\/dkim-verifier\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DKIM (DomainKeys Identified Mail) describes a method to verify the authenticity of an email sender system. In other words: was the email from person_X@companydomain.tld actually sent from companydomain.tld? For this to work, the email is signed by the sender&#8217;s email system (asymmetric encryption private\/public). The recipient can then verify the authenticity of the sender&#8217;s email \u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[983],"tags":[1757,2216,1353,1022],"class_list":["post-11499","post","type-post","status-publish","format-standard","hentry","category-tutorial","tag-dkim","tag-domainkeys","tag-encryption","tag-sign-e-mails"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/posts\/11499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/comments?post=11499"}],"version-history":[{"count":0,"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/posts\/11499\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/media?parent=11499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/categories?post=11499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.saasweb.agency\/en\/wp-json\/wp\/v2\/tags?post=11499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}