I have postfix + Dovecot + roundcube set up on a Ubuntu 14.04. I can correctly send and receive email for my domain name using Thunderbird. I correctly connect to my IMAP and POP 3 server using Thunderbird using STARTTLS.
But I can't connect using Webmail Roundcude. When I try to connect using [email protected] I get this log from mail.log:
Jan 17 16:59:44 vps232808 dovecot: imap-login: Disconnected (auth failed, 1 attempts in 5 secs): user=<[email protected]>, method=PLAIN, rip=51.255.204.45, lip=51.255.204.45, TLS, session=<tkBRuYkphQAz/8wt>
contact is also a system user. When I connect with just contact as login, I could log but get the page
" SERVICE CURRENTLY NOT AVAILABLE! Error No. [500]"