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SMTP problem securing SBS 2003 with external ISA 2000

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SMTP problem securing SBS 2003 with external ISA 2000 - 26.Aug.2005 10:14:00 AM

xavierv

Posts: 4
Joined: 29.Mar.2005
Status: offline

Hi, I have configured ISA 2000 in another machine other than a SBS 2003 Standard Server. I have configured the SBS server as a secure NAT client and I have disabled the RRAS service in the SBS 2003.

I have run the ISA FP1 wizard in order to publish the server with no errors. I can send mail to the internet but I cannot receive it. I have created a rule in order to enable al traffic from the SBS 2003 server and after that, DNS testing is working fine in the SBS 2003 and server is able to browse the internet.

I have tested the connection using telnet to port 25 and I cannot connect to that port.

I donÆt know if there is any special consideration I need to take into account in the SBS 2003 server that is blocking the traffic in port 25. I have performed the same steps in a normal Exchange 2003 installation (not SBS) and all is working fine with no problems.

Any help will be appreciated.

- Xavier