DNS Issue

Tue Mar 20 11:25:53 PDT 2007

We use an external ISP for our email. Because I am behind a firewall, I have
set up the DNS on My OS 10.4 server as a .local.
I am now experiencing email issues. Internal messages are not all going
through. We have 2 variations on our emails, both work with the ISP, but
only one is going through for my window users-my mac users seem to be okay.
I believe it is a DNS issue.
What do I need to do to solve this issue?
Joe 
-- 
Joe Francis
Technology Director
Clear Creek Amana Schools
319-430-6822

No trees were killed in the sending of this message. However, a large
number of electrons were terribly inconvenienced.