[Unit] Description=DKIMpy Milter socket Documentation=man:dkimpy-milter(8) man:dkimpy-milter.conf(5) [Socket] ListenStream=/run/dkimpy-milter/dkimpy-milter.sock SocketMode=0660 # override SocketGroup to grant access to members of another system group: SocketGroup=dkimpy-milter [Install] WantedBy=sockets.target