4. If you are going to use the PC file extension to determine the
file type anyway, why not just use application/octet-stream,
include the original file name, and let the recipient's UA do
that? Mapping a type to a file extension isn't adding any
information, and (except for well-defined types) isn't helping
interoperability with other platforms either. And this would
keep you from having to keep everyone's mapping tables in sync.
This is the way Super-TCP/NFS for Windows Email handles the non-MIME
specific file types. The user can set up associations for the standard MIME
types (i.e. GIF<->".GIF", JPEG<->".JPG", etc.) and everything else uses the
application/octet-stream type. For launching attachments, Windows File
Manager lets users set up file associations which the Email program uses.
Ray C. Langford
Frontier Technologies Corp.
Voice: (414) 241-4555 x205