Webmail send issue... Yahoo, Google... etc

[t0kneneng]

Hi! My server working fine before I transfer my zimbra mail server to another server. btw I'm currently running version Release 5.0.10 GA planning to upgrade it to new version later after I fix the problem with your help guys.

Ok here's my current situation:

POP3 : It can send mail Internal and External

My problem is on Webmail

I can send mail Internal, I cannot send External mail to any of the following Yahoo, Google, and other External mail.

Anyone experience this problem?

[uxbod]

cat /etc/hosts
cat /etc/resolv.conf
dig yourdomain mx
dig yourdomain any
host `hostname` <- note backticks and not single quotes