Hello! Earlier today I completed this Perfect server guide (http://www.howtoforge.com/perfect-server-ubuntu-12.10-apache2-bind-dovecot-ispconfig-3). Everything seems to be working fine now, with one exception: Although I was able to receive an email sent from my Gmail account, I don't seem to be able to send messages (using SquirrelMail right now). Also, how to check the incoming/outgoing servers and ports needed to use an email client? Thanks. EDIT: Actually, the situation has reversed - I was just able to send an email through SquirrelMail to my Gmail account. However, the opposite doesn't seem to be working right now. How to troubleshoot this issue? EDIT 2: Sorry about the spam, everything is ok now.