[exim] Spam volume spike

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Author: Ian Eiloart
Date:  
To: exim users
Subject: [exim] Spam volume spike
Hi,

I've noticed a huge spike in spam volumes recently. For 10 months, up until
about 3 weeks ago, we were consistently rejecting an average of about
250,000 spam messages per day. We'd never rejected more than 400k messages.

Then, about 26 June, we rejected over 400k messages, and numbers kept
rising with over a million messages rejected on a couple of occasions.

    <http://www.sussex.ac.uk/its/email/stats/>
    <http://www.sussex.ac.uk/its/email/stats/spamgraph.png>


Stats published by Cambridge show a similar trend. Have others seen a
similar thing?


--
Ian Eiloart
IT Services, University of Sussex
x3148