Okie, I'm just finish configure my postfix. My postfix is MTA for my MUA Squirrelmail. I'm using Linux RedHat 9.0 OS.

Somehow I'm only able to send mail but not able to receive mail.

Plus I...

Yes, it sort of make sense. But I did run a check on my sendmail status, and it's up and running. About sendmail configuration is default from beginning, I didn't change anything, but only two line...

I did try to do nmap -sS for localhost and etc.. 25 and 110 is in the state closed. But my router configuration is open for it.. and iptables' port 25 and 110 is accepting. When i do telnet.....

Wow this is a bit weird. Well I'm not an expert in Linux. But I know that iptables responsible for the system firewall. So i went in to /etc/sysconfig and vim the iptables and i see that port 25...