smtp vrfy

[Simon Jones]

> > On 06/11/2007, Simon Jones <simon at saq.co.uk> wrote:
> > >
> > >
> > > > -----Original Message-----
> > > > From: mailscanner-bounces at lists.mailscanner.info
> > [mailto:mailscanner-
> > > > bounces at lists.mailscanner.info] On Behalf Of Koopmann, Jan-Peter
> > > > Sent: 06 November 2007 08:00
> > > > To: MailScanner discussion
> > > > Subject: RE: smtp vrfy
> > > >
> > > > > *breaks out the clue stick*
> > > > >
> > > > > Callouts are considered abusive by many servers-- you probably
> > want
> > > > to
> > > > > be VERY
> > > > > VERY CAREFUL about doing this...  Personally I don't run it at
> > all,
> > > > but
> > > > > my spam
> > > > > setup is such that I don't need to...
> > > >
> > > > Are they talking about sender address verification? The way I
> read
> > it
> > > > he
> > > > is trying to do the opposite and ask his inbound receiving
mailer
> > > which
> > > > would be a wise thing to do and has nothing to do with callouts.
> > Might
> > > > be wrong though... :-)
> > > > --
> > >
> > > Hi, that's exactly what I'm trying to do - I run a server with a
> > generic
> > > public domain with lots of users on it - the domain has been
around
> > for
> > > 12 years so attracts mucho canned meat of the spam variety.  All I
> > want
> > > mailscanner to do is say to the destination server "hey there, do
> you
> > > have this address?" before actually sending the message, which
> would
> > > take some pressure off the spooler on the destination server.
> > >
> > > I think it IS working but the gateway is starting the smtp vrfy
> > > transaction with <postmaster> rather than <postmaster at domain.com>
-
> > > here's the error off the destination machine: "unacceptable mail
> > address
> > > in MAIL FROM:<postmaster>"
> > >
> > > I'm running a seperate machine with postfix only and this does use
> a
> > > postmaster at domain.com address for outside smtp transactions, but I
> > can't
> > > find the config to specify what address the postmaster should use
-
> > only
> > > that it is an alias of root in /etc/postfix/aliases
> > >
> > > Thanks again chaps, the answer is probably blatantly simple but
I'm
> > not
> > > seeing it :(
> > How about
> > address_verify_sender = postmaster
> > in main.cf ... or rather
> > address_verify_sender = postmaster at yourdomain.com
> > ...?
> > Cheers
> > --
> > -- Glenn

There's nothing else I need in main.cf is there?  I can't figure why
it's not calling back to the destination server and getting the correct
result, it still bounces everything as invalid rather than just the bad
stuff.

smtpd_recipient_restrictions = reject_non_fqdn_recipient,
reject_unknown_sender_domain, reject_unknown_recipient_domain,
reject_unverified_recipient, reject_unauth_pipelining,
permit_mynetworks, reject_unauth_destination, reject_maps_rbl, permit
address_verify_sender = postmaster at domain.com
unverified_recipient_reject_code = 550
address_verify_map = btree:/etc/postfix/verify