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Re: Extremely High Spam Statistics
From: Roger Safian <r-safian () NORTHWESTERN EDU>
Date: Tue, 13 Feb 2007 09:00:51 -0600

At 08:55 AM 2/13/2007, Ken Connelly put fingers to keyboard and wrote:
Roger Safian wrote:
At 06:51 PM 2/12/2007, Tim Lane put fingers to keyboard and wrote:


I would be interested in comparing our spam stats with other institutions.
We are currently sent around around 450 000 emails per day, of which 98-99% are
spam leaving around 5000 valid email messages passed through.  This is
transparent to our uses who only receive valid email.

Are other institution's spam levels this high?  I would be very interested in
hearing stats as I thought global rates were only around 90-95%.

Your levels on spam seem high to me.  I'd suggest that you change your public
directory to not include email address in plain text.  You can obfuscate them,
see our directory for an example.

ooh, that's...  interesting.  How long have you been doing that and do
you get complaints about it?  Anyone else doing similar things?

We switched for a system where we had placed artificial speed bumps on
off campus directory lookups to the obfuscation, about a year ago.  We
had no complaints.  We did spend a very long time, working on it though,
trying various obfuscation techniques, discussing goals.  Everyone had a
say, and I think that's one of the reasons the project was successful.

BTW - We stole the idea, from somebody...I forget who now.  I think
it's not that uncommon a solution.

Roger A. Safian
r-safian () northwestern edu (email) public key available on many key servers.
(847) 491-4058   (voice)
(847) 467-6500   (Fax) "You're never too old to have a great childhood!"

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