{"id":760,"date":"2012-09-30T09:06:06","date_gmt":"2012-09-30T09:06:06","guid":{"rendered":"https:\/\/www.rosehosting.com\/blog\/?p=760"},"modified":"2022-06-03T03:52:26","modified_gmt":"2022-06-03T08:52:26","slug":"install-and-configure-opendkim-on-debian-squeeze","status":"publish","type":"post","link":"https:\/\/www.rosehosting.com\/blog\/install-and-configure-opendkim-on-debian-squeeze\/","title":{"rendered":"Install and Configure openDKIM on Debian Squeeze"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div><p>Installing and Configuring openDKIM on Debian<\/p>\n<p>This guide will show you how to install and configure openDKIM on a <a title=\"Debian Squeeze VPS\" href=\"https:\/\/www.rosehosting.com\/debian-hosting.html\" target=\"_blank\" rel=\"noopener noreferrer\">Debian Squeeze VPS<\/a>. DKIM is a signature\/cryptography email authentication technology used to validate that a message was sent by an authorized source. DKIM allows an organization to take responsibility for transmitting a message, in a way that can be verified by a recipient. More information can be found at the official DKIM web site.<\/p>\n<p><!--more--><\/p>\n<p>Install openDKIM<\/p>\n<pre class=\"brush: shell; gutter: true\">aptitude install opendkim<\/pre>\n<p>Create a new directory for your key<\/p>\n<pre class=\"brush: shell; gutter: true\">mkdir \/etc\/opendkim\/keys\/your-domain.com<\/pre>\n<p>Generate singing keys<\/p>\n<pre class=\"brush: shell; gutter: true\">opendkim-genkey -D \/etc\/opendkim\/keys\/your-domain.com -d your-domain.com -s mail<\/pre>\n<p>The above command will create two files under the newly created directory &#8211; mail.private and mail.txt<\/p>\n<p>Change the ownership to opendkim<\/p>\n<pre class=\"brush: shell; gutter: true\">chown -R opendkim:opendkim \/etc\/opendkim\/keys\/your-domain.com<\/pre>\n<p>Open the openDKIM configuration file \/etc\/opendkim.conf , delete everything and add the following<\/p>\n<pre class=\"brush: shell; gutter: true\">PidFile \/var\/run\/opendkim\/opendkim.pid\nMode    sv\nSyslog  yes\nSyslogSuccess   yes\nLogWhy  yes\nUserID  opendkim:opendkim\nSocket  inet:8891@localhost\nUmask   002\nCanonicalization        relaxed\/simple\nSelector        mail\nKeyFile \/etc\/opendkim\/keys\/your-domain.com\/mail.private\nKeyTable        \/etc\/opendkim\/KeyTable\nSigningTable    \/etc\/opendkim\/SigningTable<\/pre>\n<p>Open \/etc\/opendkim\/KeyTable (list of keys available for signing) and add the following line<\/p>\n<pre class=\"brush: shell; gutter: true\">mail._domainkey.your-domain.com your-domain.com:mail:\/etc\/opendkim\/keys\/your-domain.com\/mail.private<\/pre>\n<p>Open \/etc\/opendkim\/SigningTable and add the following line<\/p>\n<pre class=\"brush: shell; gutter: true\">your-domain.com mail._domainkey.your-domain.com<\/pre>\n<p>Open \/etc\/opendkim\/TrustedHosts and add the following lines<\/p>\n<pre class=\"brush: shell; gutter: true\">127.0.0.1\nlocalhost\nyour-domain.com<\/pre>\n<p>Add the content of the \/etc\/opendkim\/keys\/your-domain.com\/mail.txt file to your DNS zone file<\/p>\n<pre class=\"brush: shell; gutter: true\">mail._domainkey IN TXT \"v=DKIM1; g=*; k=rsa; p=MIG.......B58FQIDAQAB\" ; ----- DKIM mail for your-domain.com<\/pre>\n<p>Open the postfix configuration file (\/etc\/postfix\/main.cf) and add the following lines<\/p>\n<pre class=\"brush: shell; gutter: true\">smtpd_milters           = inet:127.0.0.1:8891\nnon_smtpd_milters       = $smtpd_milters\nmilter_default_action   = accept\nmilter_protocol   = 2<\/pre>\n<p>Restart both openDKIM and postfix<\/p>\n<pre class=\"brush: shell; gutter: true\">\/etc\/init.d\/opendkim restart\n\/etc\/init.d\/postfix restart<\/pre>\n<p>To check if everything works as expected send an email to check-auth@verifier.port25.com. In a few seconds you will get an email as follows<\/p>\n<pre class=\"brush: shell; gutter: true\">====================================\nSummary of Results\n====================================\nSPF check:          pass\nDomainKeys check:   pass\nDKIM check:         pass\nSender-ID check:    pass\nSpamAssassin check: ham<\/pre>\n<p>The line &#8220;DKIM check: pass&#8221; means that you have successfully installed openDKIM on your sever.<\/p>\n<p><span style=\"color: #ff0000;\"><strong>PS.<\/strong><\/span> If you liked this post please share it with your friends on the social networks using the buttons on the left or simply leave a reply below. Thanks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Installing and Configuring openDKIM on Debian This guide will show you how to install and configure openDKIM on a Debian &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Install and Configure openDKIM on Debian Squeeze\" class=\"read-more button\" href=\"https:\/\/www.rosehosting.com\/blog\/install-and-configure-opendkim-on-debian-squeeze\/#more-760\" aria-label=\"Read more about Install and Configure openDKIM on Debian Squeeze\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1700,1706,1703,13],"tags":[48,126,127,125,1152],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Install and Configure openDKIM on Debian Squeeze - RoseHosting<\/title>\n<meta name=\"description\" content=\"Install and Configure openDKIM on Debian Squeeze - 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