I've followed through the very nice and detail how-to provided here for a postfix email server and receive a wrong/bad password error when trying to connect via imap/smtp to an email account.
My /var/log/mail.log shows:
Nov 9 12:26:16 email imapd-ssl: Connection, ip=[::ffff:192.168.1.195]
Nov 9 12:26:25 email imapd-ssl: LOGIN FAILED, ip=[::ffff:192.168.1.195]
I'm certain I'm connecting with the correct username and password.
I would like some advice on how best to troubleshoot this issue. If there is any more information I can provide I'd be happy to.