Originally Posted by vlade
Apr 8 13:55:23 localhost postfix/trivial-rewrite: warning: do not list domain domainname.com in BOTH mydestination and virtual_mailbox_domains
You've listed domainname.com in both the mydestination line in /etc/postfix/main.cf and in the domains table in the MySQL database. If you use domainname.com for virtual email accounts, please remove it from the mydestination line and restart Postfix.
Also, have you tried POP3 without SSL?