i dont even know where to start with this... first off im running Fedora Core 5, and i set up postfix according to the perfect setup tutorial on this website. following that, i installed ispconfig, and everything seemed to be working fine. i set up my own dns records for my domain (nakudev.net) on my dns server and i changed the dns thingys from the godaddy parked defaults to my dns server, but thats beside the point since it works correctly. the confusion arises when i try to send email from a remote server, like gmail, to my email server. i have a dns A record for mail.nakudev.net pointing to my ip, and an MX record for mail.nakudev.net. under the site administration I added a user for email, "[email protected][email protected] and it doesn't arrive. even more confusing, it doesnt even show up in /var/log/maillog (where ispconfig keeps the postfix log). however, when i send mail from [email protected] to my gmail account, gmail receives it almost instantly. what's going on and how do i fix it?