mail client kaput
 

I'm trying to send a message over a network to an email address, using a Linux DNS server as the sender. The mail account is verified as working on the network, and can receive mail from a windows machine.

I've tried using "mail test@test.com" and sending a message that way, but it just never arrives to the windows machine. However, another windows machine was able to send the mail.

The DNS server is doing all the translation for the mail address, so I figured that would work, but it isn't working.

Any ideas?