Fejlfinding i Postfix?

Hej Linuxhajer.

Er der en venlig sjæl som vil assistere mig i at fejlfinde i min mailserver opsætning, jeg har brugt denne guide, men det kører ikke http://www.howtoforge.com/virtual_users_and_domains_with_postfix_debian….

Fejl:
Min mailklient spørger hele tiden efter brugernavn og password.

/var/log/mail.info:
Jul 7 16:22:24 marius courierpop3login: LOGOUT, ip=[::ffff:62.243.172.62]
Jul 7 16:22:24 marius courierpop3login: LOGIN FAILED, user=mivs, ip=[::ffff:62.243.172.62]

/var/log/mail.err:
Jul 7 16:29:46 marius postfix/trivial-rewrite[2582]: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem
Jul 7 16:29:48 marius postfix/trivial-rewrite[2583]: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem
Jul 7 16:30:49 marius postfix/trivial-rewrite[2587]: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem

Jul 6 17:12:16 marius amavis[2504]: (02504-01) (!!) ClamAV-clamscan av-scanner FAILED: /usr/bin/clamscan timed out at (eval 44) line 462.
Jul 6 17:12:16 marius amavis[2504]: (02504-01) (!!) TROUBLE in check_mail: virus_scan FAILED: virus_scan: ALL VIRUS SCANNERS FAILED: ClamAV-clamd av-scanner FAILED: Too many retries to talk to /var/run/clamav/clamd.ctl (Can't connect to UNIX socket /var/run/clamav/clamd.ctl: No such file or directory) at (eval 44) line 268.; ClamAV-clamscan av-scanner FAILED: /usr/bin/clamscan timed out at (eval 44) line 462.

Hvad gør jeg galt?