In nethserver 8, after generating dkim signature, the message isn’t signed with the dkim.
The error is the following from rspmd
cannot load dkim key /var/lib/rspamd/dkim/default.key: cannot map key file: ‘/var/lib/rspamd/dkim/default.key’ Permission denied
The file present in /home/mail1/.local/share/containers/storage/volumes/rspmd-data/_data/dkim/default.key has permission 600
For temporary fix change permission to 640
a fix is going to be verified and released, the bug concerns only new installation from mail:1.4.3, the fix will take care only for new installation, for installation done from 1.4.3 you could fix them by a CLI