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linux:exim:dkim [2018/04/10 12:00] – niziaklinux:exim:dkim [2025/06/10 09:48] (current) – [Configure exim4] niziak
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 +====== DKIM ======
 +
  RFC 8301 says:  RFC 8301 says:
  
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 ====== Configure exim4 ====== ====== Configure exim4 ======
  
-In Debian, use **exim4-daemon-heavy** package. +  * In Debian, use **exim4-daemon-heavy** package. 
-Change owner of private key file to be readable by exim4. In Debian exim4 user is **Debian-exim**. +  * Change owner of private key file to be readable by exim4. In Debian exim4 user is **Debian-exim**. 
-Put private key in */etc/exim4 directory*. In /etc/ssl exim4 cannot find file (chrooted?)+  * Put private key in */etc/exim4 directory*. In /etc/ssl exim4 cannot find file (chrooted?)
 remote_smtp transport is running under user 101 (Debian-exim) group 42 (shadow) remote_smtp transport is running under user 101 (Debian-exim) group 42 (shadow)
-In **exim4.conf** under **remote_smtp** transport add:+  * In **exim4.conf** under **remote_smtp** transport add:
 <code ini> <code ini>
   dkim_canon = relaxed   dkim_canon = relaxed
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 </code> </code>
  
 +To use DKIM for all sender domains automatically:
 +<code ini>
 +  dkim_domain = ${sender_address_domain}
 +</code>
 +
 +====== References ======
 +
 +  * [[http://takkaria.org/2016/02/dkim-exim-debian|Setting up multi-domain DKIM with exim + Debian]]
 +  * [[https://wiki.sharewiz.net/doku.php?id=exim4:selective_and_multiple_domain_dkim_with_exim|Exim4 - Selective and multiple domain DKIM with Exim]]
 +  * [[https://www.emailonacid.com/blog/article/email-development/what_is_dkim_everything_you_need_to_know_about_digital_signatures|What is DKIM? Everything You Need to Know About Digital Signatures]]
  
  
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 ====== Tools ====== ====== Tools ======
  
-[[https://protodave.com/tools/dkim-key-checker/]]+  * [[https://protodave.com/tools/dkim-key-checker/]]