Thank you for the quick reply Till. I've changed the owner of dkim to root and I have set the other folders to 640. Hopefully nothing blows up later.
Try to increase your vsz_limit in dovecot.conf: service imap { vsz_limit = 512M }
/etc/postfix git:(master) ✗ % service postfix restart postfix/postfix-script: stopping the Postfix mail system postfix/postfix-script: warning:...
Solved! Disabling suPHP did the trick for my setup. Thank you very much!
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