antivirus for exchange

We recently removed NAV for Exchange (from Exchange 5.5 server). It doesn't
get along with Veritas Backup Exec and the virus defs don't get updated that
often.  We've replaced it with Trendmicro's Scanmail for Exchange.  The
eManager add-on has spam blocking.  The virus defs are updated very
frequently.  Very easy to setup and configure.  


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