RE: Spamming from mail server behind ISA.
- From: "John Tolmachoff" <isalist@xxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 19 Jun 2002 06:08:13 -0700
It is not a mail attack on you. It is someone using your mail server to
relay spam.
Check you relay settings.
Go to the SMTP virtual server properties, Access, Relay. Make sure it is
set to "Only the list below."
John Tolmachoff
IT Manager, Network Engineer
RelianceSoft, Inc.
Fullerton, CA 92835
www.reliancesoft.com
-----Original Message-----
From: Vinaykumar G [mailto:G.VINAY@xxxxxxxxx]
Sent: Tuesday, June 18, 2002 8:11 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Spamming from mail server behind ISA.
Importance: High
http://www.ISAserver.org
Hi All,
I have strange problem with my mail server behind ISA
server(integrated
Mode). I have SMTP server on IIS(on a different PC) with Invalid IP and
is
published behind ISA server using Mail wizard as secure NAT client. I
find
lots of Spam mails going out from this mail server using external IP
address
of ISA server. I have enabled SMTP filter on ISA, but i doubt its
working or
not?
I find following messages in my Event viewer of ISA server continously.
THE SMTP command exceeded its length.
In details it shows as mail from some xyz@xxxxxxxxxx
Please advice as my Event viewer is full of such messages. Is it any
kind of
Mail attack? What has to be done to stop such activity.
Please help me out. I have configured SMTP filter to block messages
containing spam but they still get through. please advice of some other
ways
to prevent ISA from relaying.
Regards,
Vinay.
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