Re: Microsoft ISA SMTP Filter
From: Kirtan L (kirtanl@email.com)Date: 03/27/02
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From: Kirtan L <kirtanl@email.com> Date: Wed, 27 Mar 2002 17:32:27 -0500
Just a followup to this I did some checking on the web and managed to get
it configured. Basically you end up using Microsoft IIS 5.x SMTP server,
or Microsoft Exchange Server 2000 as a proxy. The SMTP filter built into
the ISA will only filter on the SMTP commands it won't filter the body of
the message. To actually allow the ISA to filter out messages from certain
domains/senders or messages with certain attachements you have to use the
Microsoft SMTP server as a relay. The ISA and the SMTP server talk to each
other usign DCOM. When someone outside your network wants to send an email
to you they actually talk to the Microsoft SMTP server, and then if the
email is allowed it is passed on to your actual mail server. It is
possible to run the relay server on the internal interface of the ISA
server, or as a separate box.
Benjamin C. McKeown wrote:
> I'm trying to configure the Microsoft ISA Server 2000 to filter SMTP. I
> want it to block emails with certain types of attachements, and from
> certain domains. I went into the configuration tool and put in the
> appropriate values into the SMTP filter settings. However, when I ran a
> few tests by sending emails to my internal SMTP filter it did not block my
> attached files, nor did it block my emails if I said my email was from one
> of the denied domains. Has anyone else seen this problem, and if so what
> is the fix? Thanks.
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