Well, with this new info the problem is obvious:
 
User --> From: name <u@n>
 
Gateway --> From: ("name <u@n>") <u@n>
 
LISTSERV, 1.5i --> name = ("name <u@n>")
 
It then zaps the parens out of the  name because they are useless. It does not
zap the quotes because it did not  except parens AND quotes. Then it reformats
the name and finds funny characters in  it (the quotes), and quotes it. I told
you, it doesn't fully respect RFC822.
 
LISTSERV, 1.5j --> name = name <u@n>
 
which is output as: "name <u@n>" <u@n>
 
If  the double  quotes had  been present  in the  name, they  would have  been
changed to single  quotes since the Crosswell MAILER does  not support quoting
of quotes. As it  is they were removed when converting  to canonical form, and
then placed back because of the '@' sign in the name.
 
  Eric