[Mailman-Developers] FWIW: Postfix does VERP

[Dan Mick]

> > 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.