Authenicating users

[Stephen Swaney]

> -----Original Message-----
> From: Stephen Swaney [mailto:steve.swaney at fsl.com]
> Sent: Monday, May 23, 2005 2:57 PM
> To: 'MailScanner mailing list'
> Subject: RE: Authenicating users
>
>
> > -----Original Message-----
> > From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
> > Behalf Of Drew Marshall
> > Sent: Monday, May 23, 2005 2:48 PM
> > To: MAILSCANNER at JISCMAIL.AC.UK
> > Subject: Re: Authenicating users
> >
> > Kevin Miller wrote:
> >
> >             Surly if your MS boxes are just relays, Milter-Ahead should
> > get a 250
> >
> >             reponse when it tries to send your address a challenge
message
> > so I
> >             can't see why it shouldn't work. It would fail if it can't
> > verify the
> >             address (Gets a 550 bounce) or can't route the domain/ host.
> >
> >
> >
> >     My understainding is Exchange 5.5 doesn't do the milter-ahead thing.
> > To get
> >     a user list out of 5.5, I'd have to export LDAP data, massage it,
> > etc.
> >     There's a FAQ or a MAQ on setting it up, but it entails bones,
> > feathers,
> >     masks and rattles and I've never felt inclined to tackle it.
> > Exchange 2003
> >     can easily be set up to reply to an address challenge apparently so
> > when
> >     we're on it, milter-ahead should respond appropriately.  Can't
> > wait...
> >
> >
> > Agreed but the point is that if you send a message to a machine that is
> > running Milter-Ahead, that machine sends back a probe message to check
> you
> > (The sender) have a valid return address. It will connect to the MS box
> on
> > the edge of the original sender's network. If that box only relays and
> > doesn't do any form of recipient checking (As you may have in an
> Exchange
> > 5.5 set up, if you don't import the users etc) then the probe will be
> > accepted as being addressed to a valid user. Therefore in the situation
> > described there should be no reason why Milter-Ahead should fail (Unless
> > there is something more fundamental wrong with the message sent in the
> > first place).
> >
> > Drew
> >
>
> I can assure you that this is the way it typically works. We have several
> clients who use milter-ahead to all back end mail hubs and don't bother to
> differentiate for the Exchange 5.5 or 2000 mailhubs. Everything still
> works fine.
>
> Steve
>

I rereading I realized that I should have been clearer. Milter-ahead of
course sends all email to the Exchange 5.5 or Exchange 2000 servers since
all email addresses are valid on those servers.

There is some wasted effort since milter-ahead must check each address.

Steve

Steve Swaney
President
Fortress Systems Ltd.
Phone: 202 338-1670
Cell: 202 352-3262
www.fsl.com
steve.swaney at fsl.com

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!