Help?? I've been trying to get this issue fixed forever and I'm desperate. If anyone can tell me why I'm getting this error and what I can do to fix I would be forever grateful. I set the server up myself. It runs web, mail and DNS and, so far I've gotten everything working on it correctly except it's ability to "send" mail. It receives mail. I've been over the Exim configuration file a dozen times, verified that port 25 is open because I can telnet to it remotely, made sure that all of the hostnames are resolving, included the mail name as well as the servers IP address in the config file for allowed hosts to relay. I just don't understand. I've even verified that I can send mail from the server itself. It just won't let me do it using a client outside of the server. Is this some goofy security "feature" that's turned on somewhere else in the operating system? Is there another file that I need to edit to tell the server to allow outside clients to use it to send mail? What am I missing?

If anyone has any ideas please let me know.

Thanks

What mail server do you use? Sendmail?

No, Exim 3.36 (and don't say upgrade it!