Hello all, I've succesfully installed CentOS 5.0, ISPConfig 2.2.12 with Dovecot and Postfix. (almost) Everything is working. I can send/receive emails from various domains (using pop and pops). I'm using full username: email@example.com I've installed the Squirrelmail package and I can't log in. I've tried using firstname.lastname@example.org and domain.com_user (I've changed web[ID] for [DOMAIN] so I can login with user@domain format string), neither work. When I try to log in as email@example.com "tail -f /var/log/maillog" shows: May 16 20:56:52 mail dovecot: imap-login: Aborted login: user=<_domain.com_user>, method=PLAIN, rip=::ffff:127.0.0.1, lip=::ffff:127.0.0.1, secured As you can see, there is an underscore as prefix of the domain, which shouldn't be there. I couldn't figure out why is this happening, that's why I'm asking here. Hope that someone can help me with this. Thanks in advance.