Greeting

I'm newbie to Squirrelmail and just installed Dovecot in CentOS6.3. When I try to login to the Squirrelmail, then I get the following error:

 auth: Info: passwd(myusername@myserver.com): unknown user

my config file is as follow:

# /usr/bin/doveconf -n -c /etc/dovecot/dovecot.conf

# 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-279.el6.x86_64 x86_64 CentOS release 6.3 (Final) auth_debug = yes auth_mechanisms = plain login auth_verbose = yes base_dir = /var/run/dovecot/ disable_plaintext_auth = no info_log_path = /var/log/dovecot-deliver.log log_path = /var/log/dovecot-deliver.log mail_debug = yes mail_location = maildir:~/MaIL mbox_write_locks = fcntl passdb { driver = passwd } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } } ssl_cert =

Any help would be appreciable.

Thanks! Mehrdad.