Hello Scott, Your _rspamd User doesn't have permissions on the parent directory /etc/mail/dkim
User and group _dkimsign have full permissions, but Other Users have None, so the _rspamd User cannot even enter that directory. To enter a directory a User needs to have r+x permissions. You either Put the Key and cert into a directory where _rspamd has permissions or you Change the permissions on the dkim directory (depending on your Security requirements) Best regards, Alex
