[Spambayes] imapfilter & MS Exchange Server

[Spambayes]

I'm trying to use sb_imapfilter with MS Exchange (2003, I think).

The problem I have is that I'm forced to use Outlook Web Access and I 
don't have access to a windows box I can run Outlook on all the time 
which means the plugin isn't an option.

imapfilter cannot connect to the server no matter what I use as my 
username and password e.g.

username
MS domain/username
username at domain

etc.

Is this possible?

Ta.