+Determination of the content MIME type inserted into the Content-Type
+header for each part depends on how the
+.B nmh
+installation was configured. If a program, such as
+.B file
+with a
+.B --mime
+or
+.B -i
+option, was found that can specify the type of a file as a MIME type
+string, then that will be used. To determine if your
+.B nmh
+was so configured, run
+.B mhparam mimetypeproc
+and see if a non-empty string is displayed.
+.PP
+If your
+.B nmh
+was not configured with a program to specify a file type as a MIME
+string, then a different method is used to determine the content-type
+string. For file names with dot suffixes, the profile is scanned for a