Outbound SMTP filtering

[Nick Rogness]

I am looking for an Outbound SMTP filtering solution to prevent SPAM and 
Virii from being sent through our SMTP relay machine (FreeBSD running 
sendmail).

A plugin module for sendmail or maybe some external appliance?  Just 
outbound SMTP traffic only.  Any suggestions?

Nick Rogness <nick at rogness.net>
-
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