What’s the output of: ls -al /var/run/opendkim groups postfix | grep opendkim postconf | grep smtpd_milters
Is postfix running in a chroot? See master.cf. Here are settings that work: /etc/opendkim.conf: ------------------------------------------------------------------------ UserID opendkim UMask 0117 Socket local:/var/spool/postfix/opendkim/opendkim.sock PidFile /run/opendkim/opendkim.pid ------------------------------------------------------------------------ $ sudo ls -al /var/spool/postfix/opendkim total 4 drwxr-x--- 2 opendkim opendkim 27 Dec 9 19:52 . drwxr-xr-x 26 root root 4096 May 24 2023 .. srw-rw---- 1 opendkim opendkim 0 Dec 9 19:52 opendkim.sock $ groups postfix | grep opendkim postfix : postfix opendkim […] $ postconf | grep smtpd_milters non_smtpd_milters = $smtpd_milters smtpd_milters = […] unix:opendkim/opendkim.sock […] Do follow a sensible tutorial such as: https://wiki.debian.org/opendkim The segmentation fault is surprising to me, though. It may also indicate that you have a really unusual system that no one else has.
