RE: Back to back DMZ Exchange and SMTP relay
- From: "Edward Sullivan" <esullivan@xxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 30 Apr 2003 09:45:27 -0500
Meant to ask that question of Gillian. Anyway, whoever, did you specify the
Smart Host in your configuration?
-----Original Message-----
From: Edward Sullivan
Sent: Wednesday, April 30, 2003 9:44 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Back to back DMZ Exchange and SMTP relay
http://www.ISAserver.org
Winston, did you specify that your frontend mail server should use the Exchange
server as its Smart Host?
Ed Sullivan
IT Director
esullivan@xxxxxxx < mailto:esullivan@xxxxxxx>
KMA Direct Communications
Confidential and Proprietary
-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx]
Sent: Wednesday, April 30, 2003 9:42 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Back to back DMZ Exchange and SMTP relay
http://www.ISAserver.org
Hi Winston,
Perhaps we're not talking about the same thing. But if you want to put an SMTP
relay on the DMZ that relays inbound and outbound mail, and an Exchange Server
on the internal network, there is NOTHING to prevent it from working. That's
why its always works :-)
Putting Exchange in the DMZ does NOT work, because you've just exposed your
user accounts and internal security zone to the public, and you certianly do
*not* want to do that!
Your setup may have factors outside of these very basic constraints.
HTH,
Tom
Thomas W Shinder
<http://www.isaserver.org/shinder> www.isaserver.org/shinder
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: <http://tinyurl.com/1llp> http://tinyurl.com/1llp
-----Original Message-----
From: Winston Akin-Cole [mailto:wcole@xxxxxxx]
Sent: Wednesday, April 30, 2003 9:10 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Back to back DMZ Exchange and SMTP relay
http://www.ISAserver.org
Sorry but according to MS this setup does not work. My company was going to do
the B2B setup but after spending a couple of days with MS they could not
resolve the e-mail flow problem. The only way to get it to work is if you put
the EXCH in the DMZ zone. We had to change our design. Let me know if anyone
has been successful in this design.
-----Original Message-----
From: Gillian Cook [mailto:gcook@xxxxxxx]
Sent: Wednesday, April 30, 2003 10:01 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Back to back DMZ Exchange and SMTP relay
http://www.ISAserver.org
Sorry I wasn't clear.
Mail is flowing from the internal network to the Internet via B2B ISA's and DMZ
SMTP server. Mail is NOT flowing from Internet to the DMZ SMTP rely to the
internal mail server.
Still curious the best way to troubleshoot this. I did double-check the server
publishing rules and the remote domains config on the DMZ SMTP mail relay
server. Maybe I'm missing something obvious but can't find it.
Hhmmm.... Any ideas?
TIA,
Gillian
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