You can *also* do this with lsof: % sudo lsof -i tcp:25 COMMAND PID USER FD TYPE DEVICE SIZE/OFF INODE NAME sendmail 239 root 4u inet 0x005bc810 0t0 TCP *:smtp (LISTEN) % using -i tcp:smtp works as well, "lsof -i :domain" is an example of finding either... -- To UNSUBSCRIBE, email to debian-user-request@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org