404 for non cfm files

Im trying to figure out how to serve up some non .cfm files ( like a zip) from a mapped directory. Anyone know how to configure? I cant find it documented anywhere.

Thanks.

Get 
HTTP Status 404 - /datadownload/myArchive.zip
type Status report
message /datadownload/myArchive.zip
description The requested resource is not available.
Apache Tomcat/8.0.36

If you are using tomcat, I think this is what you need

http://tomcat.apache.org/tomcat-7.0-doc/default-servlet.html