We use an Exchange Server for mail and a Linux system for the firewall. I am setting up a new Linux system 5.2 and trying to have SMPT to be able to send through it. The problem that I am having is that I get an error every time I try to sent mail through the Exchange Server. I have no DNS setup, but I am running sendmail. I am able to reach the Internet through the firewall, but SMPT isn't able to go through. Can you help me? Tell me what I am doing wrong or is there something I missed.
I also tried using IPPORTFW and that isn't working correctly or I have that wrong also. Thanks, Tony
