RE: Publishing multiple SMTP servers on ISA 2004
- From: "Rob Moore" <RMoore@xxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Tue, 5 Oct 2004 15:55:48 -0400
We got onto some blacklists a few months back. At least some of them, I
seem to recall, listed us by IP address.
Also, some servers do a reverse lookup on your mail, and if the reverse
lookup is wrong, they block your mail. So if we have two SMTP servers
sharing the same IP address, that'll cause trouble, too.
R.
________________________________
From: Troy Radtke [mailto:TRadtke@xxxxxxxxxxxx]
Sent: Tuesday, October 05, 2004 3:49 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Publishing multiple SMTP servers on ISA 2004
http://www.ISAserver.org
Depends on what happens. If they ban mail.blahblahblah.com vs.
4.123.123.123 makes a big difference. Never run a mail server myself,
and personally I'd think that they'd ban by name, not by IP. So if each
has it's own A record, then life should be good.... or I could be way
off... =?)
-----Original Message-----
From: Rob Moore [mailto:RMoore@xxxxxxxx]
Sent: Tuesday, October 05, 2004 2:40 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Publishing multiple SMTP servers on ISA 2004
http://www.ISAserver.org
I'm getting ready to publish a couple of SMTP servers on one ISA
2004 firewall. One is a listserv and one is Exchange. Each is run by a
different admin and each admin is concerned about the other server
interfering with his box. The main concern is spam. Specifically, if our
listserver gets flagged as a source of spam (it shouldn't, as we only
intend to use it for lists of voluntary subscribers, but you know how
these things go), will that flag affect our Exchange server? To be more
specific, will the mail from each server appear to come from the same
address, or will it come from different external addresses? (Each SMTP
server will be published on a different external IP address. On an older
firewall that we have, SMTP traffic would appear to come from the IP
address the server receives mail on.)
Thanks,
Rob
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Rob Moore
Network Manager
American Friends Service Committee
1501 Cherry St.
Philadelphia, PA 19102
RMoore@xxxxxxxx
Phone: 215-241-7870
Fax: 215-241-7204
Our greatest glory is not in never failing but in rising every
time we fall.
--Confucius
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