Re: Rationale for non-standard VERP in MJ2?

On Mon, Sep 03, 2007 at 09:14:07AM -0400, John L wrote:
> >This is why other listservers typically use VERP with extreme care - 
> >e.g. only once per month for subscription reminders, but not for regular 
> >email on the list.
> 
> Sorry, but once again you are completely mistaken.  The reason that some 
> other list software only VERPs some of its mail is the expense of outbound 
> (not inbound) handling of per-user bounce addresses in MTAs like sendmail. 

Yep, a clear evidence VERP is an ugly hack. SMTP protocol was never designed
to have multiple MAIL FROMs, only multiple RCPT TO arguments.
 
The fact that one MTA (qmail) was explicitly hacked to work with VERP
doesn't mean such use is legitimate over heterogeneus environment like
internet. Sendmail fully supports all SMTP RFCs. Yes, VERP is not handled
efficiently, since no RFC envisages such usage (same applies for Exim etc.)
So what we have here is problems in both outbound VERP handling with
several MTAs as well as problems in inbound VERP handling in conjunction
with greylisting. Really impressive...

> That's fine.  You won't change your software, and we won't change ours. 
> Now please stop complaining.

Yes, it apparently does not make any sense. You're simply not able
to accept any other opinion than your own. Fortunately, there are several
other listservers with apropriate behaviour. 

Bye.