Authenicating users

[Stephen Swaney]

> -----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

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

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