I have one sendmail server (server.com) that takes care of all of our e-mail. I've also got 5 other domains that we use this server for their e-mail. (site1.com, site2.com, site3.com, site4.com, site5.com). What I'm trying to do is get all 6 of these domains to be sent to and from. All of the domains are already able to receive mail (Cw records are set up for them). How do I get it so that if they set their client to send e-mail from user@site3.com, sendmail will send it on as user@site3.com instead of user@server.com. (Note: It is also important that users cannot send as any other domain i.e. user@blah.com)
Does this make sense?
Does this make sense?