[Dovecot] pop3 and imap don't run

Dear all,

I run dovecot and when i use 'ps ax |egrep dovecot' command , i get the following result: ////////////////// 9290 pts/3 S+ 0:00 tail -f /var/log/dovecot.err 9597 ? Ss 0:00 /opt/dovecot/sbin/dovecot 9598 ? S 0:00 dovecot/anvil 9599 ? S 0:00 dovecot/log 9601 ? S 0:00 dovecot/config 9606 pts/0 S+ 0:00 egrep --color=auto dovecot ///////////////

I dont see any pop or imap process.

--mohsen