Any way to stop logging Sobig e-mail?

Lately, our DCC logs have been running a 2 gigabytes per day.  Most
of that seems to be Sobig e-mail.  One checksum occurs 871 times in
one hourly sample.  I've had to cut back on log retention to avoid
filling up the disk.

Is there any way to disable logging for Sobig e-mail?

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-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-