CGP in front of Exchange

Ivaska_Jr, John wrote:
> We have the exact same setup with CGP in front of
exchange and are
> having the same problem.  However, we about 2300 users.
 Is there any
> way to have CGP do an ldap lookup for exchange users
before accepting
> the message?  This would be much easier for us?
> 
> Thanks for any input,
> 
> John 
> 
> -----Original Message-----
> From: CommuniGate Pro Discussions [mailto:CGatePromail.stalker.com] On
> Behalf Of Peter Leye
> Sent: Friday, November 03, 2006 2:30 PM
> To: CommuniGate Pro Discussions
> Subject: Re: CGP in front of Exchange
> 
> Karl,
> 
> In CGPro's configuration for the domain 'example.org',
you'd first have
> to make sure that you set "Mail To Unknown
Names" is set to "Rejected".
> That's the default, and from your explanation, that is
already the way
> it would be configured.
> Then, in the routing table, you make the per-user
entries as described.
> 
> You can reduce the amount of typing in the routing
table as follows:
> First, do one line as follows:
> XYZ = example.org172.16.16.1.25.via
> Then for each user:
> <jdoe*> = jdoeXYZ
> <cdoe*> = cdoeXYZ
> 
> Since mail to any domain that is not defined in CGPro
will not be
> accepted, the * will not allow mail to other domains.
> 
> Regards,
> 
> Peter Leye
> 
> 
> ----- Original Message -----
> From: "Karl Zander" <cgplistcommpartners.com>
> To: "CommuniGate Pro Discussions"
<CGatePromail.stalker.com>
> Sent: Wednesday, November 01, 2006 11:36 PM
> Subject: CGP in front of Exchange
> 
> 
> 
> Have a CGP server that we would like to use to help
> protect an Exchange 2000 server from spam/virus with
> SpamAssassin and Clamav.  Its a small server of about
10
> users and it getting hammered pretty hard with spam
right
> now.
> 
> I know I can route all mail through CGP and on to
Exchange
> with a router record like this
> 
> example.org = example.org172.16.16.1.25.smtp
> 
> where the IP address 172.16.16.1 is the Exchange
server.
> 
> But can I restrict this in some way to so only valid
> recipient email addresses go on to Exchange?
> 
> If vincentexample.org does not exist on the Exchange
> server I would like to router not to forward it on.
> 
> Would setting up router entries for each valid address
> work? i.e. if jdoe and cdoe are valid addresses
> 
> <jdoeexample.org> = jdoeexample.org172.16.16.1.25.smtp
> <cdoeexample.org> = cdoeexample.org172.16.16.1.25.smtp
> 
> Will a non-valid address not go on to Exchange?
> 
> --Karl
> 
>
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OK - thinking out of the box here, but why use commercial
software like 
CGP for this when there's nice, easy to use FREE software
that will 
provide the same functionality??

I use MailScanner (www.mailscanner.info) to provide my email

security/spam system. There's also Amavis-new (and others),
that are 
equally easy to setup and administer.

You get Sendmail/exim/postfix to query AD for valid users up
front 
(which would be part of the free solution).

-- 
Martin Hepworth
Senior Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

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