Junk Email Filter

[Jerry]

How effective is Outlook's junk email filter?

Does it use techniques such as Bayesian filtering or does it just match
against strings common to spam email?

 

[Sue Mosher [MVP-Outlook]]

It uses Bayesian techniques, but is not "trained" by the local user. Instead, Microsoft uses the vastly larger pool of data that flows through Hotmail and MSN to generate a downloadable update for the spam filter once a month or so.
--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003

and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers