My set up is as follows in general zone (LOCAL LAN) i am having 7 servers.
TWO servers are in cluster and exchange 2003 enterprise edition is installed on it.
one for SMTP - in bound mail
one for SMTP - out bound mail.
one for Antispam
one Domain Controller.
In DMZ zone I have front end server.
Other than servers in cluster in all server windows 2003 std edition is installed.
I have installed POP3 virtual server in cluster.
Everything is working fine except , I can not send mail via outlook express.
Can any one help