Okay, so I followed the Perfect Server setup, with Ubuntu 6.10. Installed ISPConfig, setup the users, have roundcube installed, can send mail within my domain, can send mail outside of my domain, but I can't receive any email from the outside world, nor can I access my roundcube from the outside world. No, my isp is not blocking it, and yes, my router is setup right. (I'm migrating from existing computer based on windows). My Linux knowledge is not too great, so, I am guessing I setup something wrong. /var/log/mail.log doesn't show any incoming connections from outside world. (don't know if that log shows incoming from the outside or not). Any help would be hugely appreciated. If any more info is needed please reply. Thank You!