I have just installed red hat linux v5. It is a internet server for www,ftp and email. Sendmail is working fine, in and out, from the server box. But the clients (Win95, or WinNT) are having trouble sending mail to the outside. I am using Microsoft Internet Mail program, and it returns a message 551 <XXXXXXXX> "we dont relay". I am not at the office and i cant remember the exact message. The <XXXXXXXX> are something else i cant remember either. But the message "we dont relay" or something like that hinted to another coworker that the problem may lie in the /etc/mail/relay_allow file on the linux server. Neither of us know what the syntax is for this file and i could not find any documentation.
Are we headed in the right direction?
Do you know the Syntax of the /etc/mail/relay_allow file?