Can spammer 'force' a timeout ?

[Marcel Burggraeve]

Since a couple of weeks a lot of spam keeps getting through and when I
examine them most of them have the following in the headers :
X-Plusine-MailScanner-SpamCheck: not spam, SpamAssassin (timed out)

I'm not using RBL checklists, our mailscanner is not really busy and lots of
them come in during the night when the system is almost doing nothing.
We're running HP-UX 11.i, the latest mailscanner, latest spamassassin and
I'm using big evil and a medicine rule from the rulesemporium.

Could there be some kind of trick to force spamassassin into a timed out
situation ?

Best regards,

Marcel Burggraeve
Plusine
The Netherlands

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