I have pop and smtp set up (so that I can use the server from windows and it fetches mail just fine, but whenever I try to send mail from outside of the network, I get a "Relay Denied" error no matter how many times I try to send it.
The error message is usually more detailed and explains _why_ relaying was denied. Can you post an actual error message?
Sendmail docs I could find on the subject say that you can specify trusted IPs (or block of IPs), but some of my users use dial-up connnections with constantly changing IP addresses. How do I fix this error?
The following HOWTO:
http://www.simpaticus.com/linux/sendmail-smtp-auth-howto.html
will solve your relaying problems and your remote connectivity problems completely. SMTP AUTH tells Sendmail to ask for a username and password when relaying mail, so people who are not valid users cannot relay through your system. Of course, sending _to_ a user on your system does not require authentication; SMTP AUTH has no negatives or downsides.
Your relaying problem may not go away if it's related to DNS resolution. That's why I asked for the specific error message above. Still, go through my HOWTO and enable SMTP AUTH anyway. It's a wonderful thing to have.
-- Rodolfo J. Paiz rpaiz@xxxxxxxxxxxxxx
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