Hi Erwan, > As root do /usr/sbin/lsof -i:25 > You'll see what smtp server is on. > > Note that a smtp server is needed by several basic Unix utilities (like > cron). Hmm, looks like postfix. lsof -i:25 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME master 10288 root 12u IPv4 15076 0t0 TCP *:smtp (LISTEN) So, postfix is listening? Maybe I misconfigured it. Hans