li...@mbchandler.net: > I'm trying to understand why this is happening and how to prevent it. I > have a relay where if an email is sent to it with just a name in the > Header From, then the server's hostname is added to the end of it. For > example, if I telnet to the server and send an email with "From:Test", > then I'll get an email from Test@hostname.
See http://www.postfix.org/postconf.5.html#myorigin myorigin (default: $myhostname) The domain name that locally-posted mail appears to come from, and that locally posted mail is delivered to. The default, $myhostname, is adequate for small sites. If you run a domain with multiple machines, you should (1) change this to $mydomain and (2) set up a domain-wide alias database that aliases each user to user@that.users.mailhost. Postfix does not support domain-less addresses. Wietse
