Wasn't considering DNS here, as here Mark only asked for the Exchange
end, but yes, it wouldn't be possible to resolve the email addresses if
the domains don't exist at all--some zone needs to be authoritative for
them.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  Kathy
  http://www.vendetta.co.uk
  DNRC  Minister for Useful but Irritating Information and Trivia
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

----- Original Message -----
From: "Lyle" <Lyle(at)lcrcomputer.com>
To: "'Kathy Evans'" <kje(at)vendetta.co.uk>; "Charlton, Mark"
<Mark.Charlton(at)saint-gobain.com>; "Hwg-Servers (E-mail)"
<hwg-servers(at)hwg.org>
Sent: 24 May 2001 01:54
Subject: RE: Exchange as an internet mail gateway


> Kathy, in order for this to work, wouldn't DNS have to be setup for
> anysub.xyz.com also?  If I query my DNS servers for the mx record for
> lcrcomputer.com, it returns the mail servers for my domain.  But if I
ask my
> DNS servers for the mx records for test.lcrcomputer.com, I get a not
found
> response from my dns servers.
>
> I just tested this against two different outgoing mail services.  Both
> bounced the message to lyle(at)test.lcrcomputer.com as host unknown.  So
while
> Exchange may accept these messages(if setup in the IMS), DNS has to be
setup
> for the subdomains at a minimum.
>
> And this may have been outside the scope of the orginal question also,
but
> something that has to be considered in the overall picture.
>
> Lyle
>
> -----Original Message-----
> From: Kathy Evans [mailto:kje(at)vendetta.co.uk]
> Sent: Wednesday, May 23, 2001 10:18 AM
> To: Charlton, Mark; Hwg-Servers (E-mail)
> Subject: Re: Exchange as an internet mail gateway
>
>
> IMS routing table.
> 1. If you set IMS routing xyz.com to <inbound> it will also route
> users(at)anysub.xyz.com (this sounds like your scenario)
> 2.  if you set it to #xyz.com it will only route users(at)xyz.com.
> 3. If you want to accept mail for multiple domains, but have them
> delivered internally to a single domain, route abc.com to xyz.com,
then
> user(at)abc.com will be delivered to user(at)xyz.com. Alternatively, you can
> maintain secondary proxy addresses for users to duplicate this
> behaviour.
> HTH
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>   Kathy
>   http://www.vendetta.co.uk
>   DNRC  Minister for Useful but Irritating Information and Trivia
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> ----- Original Message -----
> From: "Charlton, Mark" <Mark.Charlton(at)saint-gobain.com>
> To: <hwg-servers(at)hwg.org>
> Sent: 23 May 2001 14:05
> Subject: Exchange as an internet mail gateway
>
>
> > Hi
> >
> > I have a problem, (why else whould I write to you all)...
> >
> > Our company has an exchange network with several internet gateway
> boxes.  We
> > currently receive mail all to the address (at)saint-gobain.com   if I
> want to
> > receive (at)crystar.saint-gobain.com  what changes do I need to make to
> the
> > gateway server rules?  I gather the MX record for the parent domain
> will
> > cover the sub-domains for the routing.  When it gets to the exchange
> gateway
> > what is required.  Do I need an acceptance rule on the gateways for
> every
> > subdomain I wish to use, or can we set one rule to get the box to
> allow all
> > subdomain mail, (e.g.  (at)crystar.saint-gobain.com,
> (at)bob.saint-gobain.com,
> > (at)fred.saint-gobain.com?
> >
> > I know nothing about exchange, and don't even have access to it so
all
> I
> > require are general instructions thanks.  It is just that I have to
> make
> > recomendations so I need to understand the work/process required.
> >
> > Thanks for your undoubtably knowledgeable help.
> >
> > Regards
> > Mark
> >
> > ========================================
> > Mark Charlton
> > mailto:mark.charlton(at)saint-gobain.com
> > Tel: 508 795-2546
> > Fax:  508 795-5976
> >
>

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