protocols = pop3 listen = ssl_listen = protocol imap { } protocol pop3 { pop3_uidl_format = %08Xu%08Xv } protocol lda { postmaster_address = [email protected] } auth default { mechanisms = plain passdb pam { } userdb passwd { } user = root } dict { } plugin { } That's my dovecot conf and when i start dovecot: [root@server40341 ~]# /etc/init.d/dovecot start Starting Dovecot Imap: Error: Dovecot is already running with PID 1128 (read from /var/run/dovecot/master.pid) Fatal: Invalid configuration in /etc/dovecot.conf can anyone see the problem?