li...@mbchandler.net:
> On 2018-11-20 3:34 pm, Wietse Venema wrote:
> > 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
>
> Thank you. This should only happen for email from "mynetworks", right?
You may want to look up:
http://www.postfix.org/postconf.5.html#local_header_rewrite_clients
That covers the appearance of mail headers.
Wietse
