Mether,      P=[TCP], F=msDFMuCX, S=11, R=21, A=TCP $h

Muucp,       P=/usr/bin/uux, F=msDFMhuU,
                  S=13, R=23, A=uux - -r -a$f $h!rmail ($u)

Mddn,         P=[TCP],F=msDFMuCX,S=22,R=22, A=TCP $h, E=\r\n

Mdni,          P=/opt/SUNWconn/dni/sbin/dnimail,
                   F=mnCSF, S=14, R=24, A=dnimail -h -f $f -n $h $u