i have a exchange server 2003 that came with (MS SBS) Microsoft Small Business Server 2003 R2. I have a registered domain that i will refer to as "mydomain.com". i have a linux box as my firewall that i have opened up all the ports for testing purposes until i get the exchange email system working (the linux box's internal ip is 192.168.1.243). I seem to be able to send email just fine BOTH "internally (within the domain)" and "externally (outside the domain)". I have my registrar DNS for email pointing to my external ip address at 69.x.x.x and for the name "mail.mydomain.com" The SBS server with exchange is called "SERVER001.MYDOMAIN.LAN with an internal ip adress of 192.168.1.235" gateway of 192.168.1.243 and a DNS of 192.168.1.235. (i used the ". LAN" because thats what MS SBS recommended during setup instead of using a .COM for "security purposes", dont ask my why, i just did what they recommended, i hope this doesnt turn out to be the problem)
Now on to my problem......i seem to be able to send email just fine to both internal and external emails both inside and outside the domain. However i cant seem to receive email via POP3 from people outside the domain. Within the domain i can send email just fine. i am trying to have the exchange server handle the email directly from the internet. the exchange clients are using outlook and are using 192.168.1.235 as the IP for both SMTP and POP3. anyone have any ideas what i am doing wrong?