The ripMIME[1] library is only needed if your virus scanner
cannot natively process email messages (for example: FRISK F-Prot).

If you don't need it, you can disable checking for it during install
with the configure option "--disable-ripmime", otherwise:

tar xvzf ripmime-*.tar.gz
cd ripmime-<version>
make libripmime
<as root>
cp libripmime.a /usr/lib
mkdir -p /usr/include/ripmime
cp mime.h /usr/include/ripmime
cp ripmime-api.h /usr/include/ripmime
ldconfig

[1] http://www.pldaniels.com/ripmime/
