-\*(lqmmailid\*(rq was the only type of masquerading in the original MH package, and
-apparently stands for \*(lqmasquerade mail identification\*(rq. This type of
-masquerading keys off of the GECOS field of the passwd file. When enabled,
-.B nmh
-will check if the user's pw_gecos field in the passwd file is of the
-form:
-.PP
-.RS 5
-Full Name <fakeusername>
-.RE
-.PP
-If it is, the internal
-.B nmh
-routines that find the username and full name
-of that user will return \*(lqfakeusername\*(rq and \*(lqFull Name\*(rq respectively. This is
-useful if you want the messages you send to always appear to come from the name
-of an MTA alias rather than your actual account name. For instance, many
-organizations set up \*(lqFirst.Last\*(rq sendmail aliases for all users. If this is
-the case, the GECOS field for each user should look like:
-.PP
-.RS 5
-First [Middle] Last <First.Last>
-.RE
-.PP