Which MIME type to use for a binary file that's specific to my program?

Question

My program uses its own binary file type, so I assume I can\'t use MIME type text/plain, as it is not a 7-bit ASCII file.

Should I just call it \"application/myappna

Answer 1

According to the spec RFC 2045 #Syntax of the Content-Type Header Field application/myappname is not allowed, but application/x-myappname is allowed and sounds most appropriate for you're application to me.