smtp vrfy

[Glenn Steen]

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 Glenn Steen
> > Sent: 06 November 2007 10:02
> > To: MailScanner discussion
> > Subject: Re: smtp vrfy
> >
> > 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
>
> Cheers Glen,
>
> That sorted the address issue - still doesn't work though hehe, bounces
> everything - valid or not but if I do a vrfy user at domain.com on the
> destination server it validates or rejects as one would expect.  Now
> checking my config to make sure nothing fishy is going on here...
>
> Simon
Does it work on the "target" if you telnet from the "source"
(gateway/MS-box) and do it by hand? If so, then definitely something
wrong with the rest of the setup on the GW:-).
Wietses doc is pretty lucid, so do try and follow that;-).

Cheers
-- 
-- Glenn
email: glenn < dot > steen < at > gmail < dot > com
work: glenn < dot > steen < at > ap1 < dot > se