[Mailman-Developers] FWIW: Postfix does VERP
Dan Mick
Dan Mick <dmick@utopia.West.Sun.COM>
Thu, 6 Dec 2001 16:20:52 -0800 (PST)
> > At least as of the snapshot I'm running, 20010714, postfix does VERP just
> > as you'd expect, merely by adding -V to the "sendmail" invocation.
> > (It works with multiple addresses, too.) Hmmm; maybe it's time to
> > play around with Sendmail.py again.
> >
> > There seems to be no way to invoke such behavior through an
> > SMTP connection (not surprisingly).
>
> I lied: EHLO reports that XVERP is an optional command, and indeed
> MAIL FROM: <from-addr> XVERP is legal and generates a VERPed address.
>
> Hmm. Maybe this SMTP extension is already "defined". Sure looks
> like one could hack SMTPDirect.py to use it.
>
> Hmm, hmm, hmm.
At least Courier and Postfix seem to implement this extension.
http://courier.sourceforge.net/intro.html
http://www.postfix.org
continuing 'hmm'-ing.