In order for the /etc/ftpconversions file to control compression of files transfered on the fly both for anonomous and normal ftp there mus be a softlink made between: /bin/conpress -> /usr/bin/conpress just as there seems to be between: /bin/gzip -> /usr/bin/gzip
Wrong component, reassigning.
anonftp-3.1-1 has /usr/bin -> /bin, /usr/lib -> /lib symlinks in the chroot environment, so /usr/bin/compress will work anywhere.