Andreas Metzler wrote: > Julian Mehnle <[EMAIL PROTECTED]> wrote: > > Andreas Metzler wrote: > > > If I send an e-mail over mail.nusrf.at with envelope-from > > > [EMAIL PROTECTED] I am _not_ forging anything or making > > > "unauthorized use of domains" > > > > Yes, you are. The envelope-from address is not a reply-to address, > > it's a sender address. If you are sending from mail.nusrf.at, you > > are not sending from logic.univie.ac.at. So you should not specify > > <[EMAIL PROTECTED]> as the envelope-from address, or you'd > > be forging it. > > No, I am just specifying where I want bounces to go to. > > MAIL FROM:<reverse-path> [SP <mail-parameters> ] <CRLF> > > This command tells the SMTP-receiver that a new mail transaction is > starting and to reset all its state tables and buffers, including any > recipients or mail data. The <reverse-path> portion of the first or > only argument contains the source mailbox (between "<" and ">" > brackets), which can be used to report errors.
There you have it. It's the "source mailbox", and while it can be used to report errors, it can *not only* be used to report errors. I'm relieved that the RFC doesn't contradict my common sense understanding of a "sender address".
