I stumped on this one. I can't connect via my Thunderbird e-mail client nor UEBINIAU - I am running Dovecot (set for "all IPV4 and IPV6). Configuration sucessfully starts Dovecot. When I try to configure address for non-SSL connections to xx.xx.xxx.xxx:110 Dovecot wont start. - Service POP3 shows "Online" in ISPConfig CP. - netstat -tap shows POP3 and IMAP >> Dovecott running in "LISTEN" state. - I tried mail.mydomain.com , xx.xx.xxx.xxx, localhost in UEBINIAU configuration for "smtp hostname", I tried - all variations for my username, Maildir is checked. Any ideas anyone??