Hi, I haven't setup sendmail as mail relay before. I just has qmail experience before. But in my current company, it uses sendmail as a mail relay servers. I would like to ask at all how to setup a sendmail as a mail relay. The network diagram likes this: A -> B -> C -> Internet "B" and "C" are mail relay mail servers. "A" is a mail client to send out the mail. Qustions: 1. How to setup "B" & "C" as mail relay. 2. "C" will be final mail relay server. How can I make sure the mail "FROM" header will not be changed which is sent out by "A"'s mail client. Thanks for your attention ! Regards Andrew So _______________________________________________ Redhat-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list