[Exim] virus filter

Hello,

What happened to the virus filter that used to be available via a
link from the Exim home page?

We have been using the filter (currently version 0.17) for a while,
but we are starting to come up with cases where remote sites are objecting
to us rejecting attachments with certain extensions (eg .eml).

Is the list of extensions based on known viruses, or on
extensions which could potentially be used for viruses?

Would it be possible for an attachment with a .eml suffix to
be used to deliver a virus?

Thanks,

Dave