[unisog] spam-filter for Exchange/Outlook, centrally managed, user selectable

Michael D. Sofka sofkam at rpi.edu
Wed Jun 5 15:22:05 GMT 2002

I've been running tests with MIMEDefang+SpamAssassin+Razor.  MIMEDefang
is a sendmail milter.  The latest versions make using SpamAssassin easy.

Generally, you have to be careful about false positives.  Adding your own
institution to the whitelist is advised.

You may also want to check out MailScanner (http://www.sng.ecs.soton.ac.uk/mailscanner/),
which has some anti-spam provisions (using internet black lists).  ActiveState
has a product which is also a Perl Milter.  I haven't had a chance to test this.

I am not aware of any Exchange specific products, but ActiveState does
distribute ActivePerl, which runs under windows so they may have a way
to tie this all together with Exchange.  (You could, for example, filter
all incoming mail through sendmail, taking advantage of the various
RBL's, as well as milters.)

Catching Spam is difficult.  Whatever method(s) you use, even with opt-in,
expect surprises and complaints.  But, for some users it is going to be


At 05:26 PM 6/4/2002 -0400, Andre Earl Paquet wrote:
>       I am looking for an (incoming-)Spam-filtering program, that would be
>attached to our Exchange server, centrally managed AND user selectable.
>       Does anybody out there have suggestions about such a beast ?
>       I know the "user selectable" part is difficult.
>       Background : we are in a University setting.
>                    Some people are very fed up about SPAM. It is
>                    true that it is getting difficult to bear :
>                    for some, almost 50 % of their email is SPAM.
>                    Some of these people would be willing to
>                    support us if we subscribed to a third party
>                    spam signatures provider to pre-filter their
>                    incoming mail for them (with the appropriate
>                    software). They DO NOT want to
>                    maintain their own individual filters.
>                    On the other hand, other people don't want to
>                    hear about any content/source filtering for their
>                    email. "One person's SPAM is the other person's
>                    essential email", they say. And Big Brother, and
>                    all that.
>                    I tend to believe that SPAM is a fact of life,
>                    even if I hate it, and I tend to agree with the
>                    no-central-filtering crowd.
>                    Nonetheless...
>                    We would like to offer a non-compulsory centrally-
>                    managed (third party maintained signatures) anti-spam
>                    filtering for those who want such a thing. People
>                    would choose to opt-in.
>                    Our official EMAIL platform is now Exchange/Outlook,
>                    so it would have to integrate with that.
>                    I will summarize.
>Thank you,
>Andre Earl Paquet,
>Security Officer,
>Universite de Montreal

Michael Sofka                          sofkam at rpi.edu
CCT Sr. Systems Programmer  email, webmail, listproc, TeX, epistemology.
Rensselaer Polytechnic Institute, Troy, NY.    http://www.rpi.edu/~sofkam/

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