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DKIM mit Ubuntu und Postfix

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Guide to Install OpenDKIM for multiple domains with Postfix and Debian

This is a guide to installing OpenDKIM for multiple domains on a Postfix-installtion on Debian. I tried some other guides but kept running into problems, so this is how I did it.

Among others, Google Gmail and Yahoo mail check your email for a DKIM signature.

Install and Configure OpenDKIM

1. Install OpenDKIM

apt-get install opendkim

Comment: This will install the latest available stable Debian packaged version of OpenDKIM which is currently 2.0.1. This version is already a couple of years old (2010).
If you know how/want to compile sources yourself, then the latest version is 2.4.3 (and 2.5.0 is right around the corner)


Linux-Befehle zur Verwaltung vom Server

Starten des DNS

/etc/init.d/bind9 start 
/etc/init.d/bind9 restart




mailq | less 

postqueue -p

einzelne Mail ansehen:

postcat -q MAILID

Anzahl der Mails in der Queue:

mailq | egrep '^--' 

gesamte Mail-Queue löschen:

postsuper -d ALL