Solaris and spam control

[Vahid Moghaddasi]

Hi everyone,
My apologies if this does not seem to be a Solaris problem.
We are trying to come up with a solution to control spamming
on our Solaris mail servers. Just wanted to see what you use
and what you recommend? Currently we are just using sendmail's
features such as DNS lookup, domain block, etc.
Thank you,
Vahid.

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