The topic pretty much says it all.<BR><BR>I have a postfix installation that is currently using gmail for a relay. The only problem I have is that all mail that is sent looks like it originates from ...

So, I'd like to migrate some filtering MTAs from Qmail to Postfix, so that eventually I can take advantage of valid-address-checks at the SMTP level.<BR><BR>The setup is, I have multiple relay MTAs ...