[Sqlgrey-users] Introducing Leibniz-Rechenzentrum

[Michael S. <Mic...@lr...>]

Before I go deeper into the discussion of greylisting, I want to introduce
the Leibniz-Rechenzentrum, where Max and I are working. I think this will
be necessary to understand some of my ideas or the way I am looking at
greylisting and email in general.

The Leibniz-Rechenzentrum is part of the Bavarian Academy of Science.  We
are the ISP/ASP for the scientific organizations in the Munich area, for
example 10 universities (general, technical, applied sciences). We are
responsible for the Munich Scientific Network with more than 50.000
computers. In addition we are the highperformance computing center for all
the other universities in Bavaria and one of the three Supercomputer
Centers of Germany. For more information go to
http://www.lrz-muenchen.de/wir/intro/en/.

Going back to email. At the moment we house about 65.000 mailboxes under
180 different domains. We process about 1.2 million emails per day. Our
software comes from Syntegra, a part of Britisch Telecom (formerly Control
Data Systems, and before that Control Data Corporation = CDC) and is a
little bit similar to Postfix.

Max programmed the glue software to interface the receiving daemon
(SMTPserver) with the policy daemon sqlgrey. Any I will hopefully be able
to discuss new features as far as my time allows it.

Having said this, you will understand that we will have different
opinions, because we do not use Postfix on the one side and maybe process
more emails than others on this list on the other side. This means we
need maybe more complex algorithms than others, but are able to throw in
more hardware. For example we will have a dedicated high available mySQL
server (at least I hope that we will have it :-) and a dedicated server
for the policy server itself.

I hope we all on this list will be able to get our needs fullfilled with
sqlgrey otherwise we must develope our own branch of sqlgrey, because we
do not want to force our opinions onto others. But beginning our own
branch would be a pity.

Regards,
Michael Storz
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Leibniz-Rechenzentrum   !   <mailto:St...@lr...>
Barer Str. 21           !   Fax: +49 89 2809460
80333 Muenchen, Germany !   Tel: +49 89 289-28840