redirecting mail to /dev/null

Greetings.

I'm running SpamAssassin and I want to redirect spam flagged emails to
/dev/null.

I have a rule in procmail to do so, but get the following error (in the
procmail log)

procmail: Couldn't determine implicit lockfile from "/dev/null"
procmail: Error while writing to "/dev/null"
> From newsales(_at_)grzzr(_dot_)com  Sun Apr 14 19:05:43 2002
 Subject: *****SPAM***** Enhance Your Sex Life !             2259
  Folder: /var/mail/tech


Thanks,

Tod

_______________________________________________
procmail mailing list
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)DE
http://MailMan.RWTH-Aachen.DE/mailman/listinfo/procmail