You can try the Windows port of SA at http://sawin32.sourceforge.net/ (currently version 3.1.7). They have a POP3 proxy version called SAwin32 (designed for end-user mail clients), as well as a full-blown port of SpamAssassin plus sa-learn and sa-update.
There's also a list of Windows SA-related software at http://wiki.apache.org/spamassassin/CommercialWindows. Cheers, Jeremy "Sg" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] Hi I am working with MS Exchange 2003 on windows 2003. What is the filtering software for spam assassin on windows? -- Geetha. S