On Tue, Jun 22, 2010 at 08:39:31AM -0400, Wietse Venema wrote:
> Keld Simonsen:
> > > > > Another approach is to use VERP which sends one message per
> > > > > recipient and encodes the recipent in the bounce address.
> > > > >
> > > > > See http://www.postfix.org/VERP_README.html
> > > >
> > > > I am trying the VERP way, and have a little difficulty to understand
> > > > what to do.
> > > >
> > > > I understand that there are two phases in the setup:
> > > >
> > > > 1. have sendmail generate an extended reply address,
> > > > with the recipient added to the reply address, after a delimiter,
> > > > which by default is "+" . the recepient address is added with the
> > >
> > > Where does VERP_README say that SENDMAIL must generate a
> > > specially-formatted sender address?
> >
> > I don't know. It was just my understanding that this was the way
> > it worked. Or: that the bounce address was specifically generated
> > per message - and that the "-XV" option to sendmail was the
> > mechanism for triggering this behaviour.
> >
> > The VERP_README says:
> >
> > > In order to make VERP useful with majordomo etc. mailing lists, you would
> > > configure the list manager to submit mail according to one of the
> > > following two forms:
> > >
> > > Postfix 2.3 and later:
> > >
> > > % sendmail -XV -f owner-listname other-arguments...
>
> Yes. When the documentation says this, then that is what
> you are supposed to do.
yes, but where?
> > Can I use VERP without specifically generated bounce addresses?
> > How do I then identify the problem adressee - which possibly has
> > a mutated address?
>
> If you could scroll down a few lines from the "sendmail -XV" example,
> then you will find all this spelled out in detail. Including the
> part that says how the failed recipient address comes back:
>
> With this set up, undeliverable mail for u...@domain will be
> returned to the following address:
>
> owner-listname+user=dom...@your.domain
>
> I can lead the horse to the water but I can't force it to drink.
Thanks for spelling it out to me. I think I allready had understood
most of this. I am interpreting your answer above that I cannot
use VERP without the specially generated return address:
owner-listname+user=dom...@your.domain
I then have some questions on things that are unclear to me:
Where do I set up the -XV option to sendmail?
I sometimes just use an include in the alias file for a bigger list, and
sometimes I use
majordomo.
For majordomo I am using wrapper in the alias file. majordomo has a number of
instances
in diverse files in /home/majordomo that either invoke /usr/sbin/sendmail or
/usr/lib/sendmail.
On which one(s) should I add -XV? Is -XV a reasonable option to
/usr/lib/sendmail, or does
it only work with /usr/sbin/sendmail ?
For the non-majordomo lists - where do I invoke sendmail -XV ? It looks like
this is not doable
in the alias file. I did not see any obvious place in postfix main.cf nor
master.cf either.
Thanks for your help.
best regards
keld
