Problem:

I can not login to webmail, although all info have been entered correctly. POP3 account can still be accessed through Outlook. It happen with ALL hosts and email accounts. Error while login: "Login failed" Error logs in /var/log/psa-horde/psa-horde.log : Jun 10 13:27:08 HORDE [error] [imp] FAILED LOGIN XXX.XXX.XXX.XXX to 127.0.0.1:143[imap/notls] as user at domain.com [on line 258 of "/usr/share/psa-horde/imp/lib/Auth/imp.php"]

If you have root access to your server, you can try this command:

# telnet localhost 143
(You may change the port number 143 to the one you are using, 143 is default port for IMAP)

If the connection is refused then there is an problem with your IMAP configuration.

 Please check this file /etc/courier-imap/imapd

At about line 29, search for:

ADDRESS = XXX.XXX.XXX.XXX

 If so, change it to

ADDRESS = 0

Save file and restart IMAP (or restart your server)

Now check "telnet localhost 143" again and see if it works.

 I hope this will help !!!!!!!!!!!!