exim questions: Filtering extensitons with version 3.35 or How to move from exim 3.35 to 4.2

[Ivan Wills <ivan@apollolifesciences.com>]

Hi
I need to implement mail filters for attachments with dangerous file 
extensions in exim.
Does any one know how to do this with the version of exim 3.35 which 
comes with Debian Woody?
How hard is it to move exim to version 4.2x under Debian Woody? (Do any 
deb's exist for Woody?)

Any help would be greatly appreciated.
Thanks
Ivan

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