getting sendmail to add Return-Path: header

[David Banning]

Now it seems to be working. I inserted it in the "F" section of the 
settings below the one we discussed and it seems to work.

> > Mlocal,         P=/usr/local/bin/procmail, F=lsDFMAw5:/|@qSPfhn9, S=EnvFromL/Hdr
> > FromL, R=EnvToL/HdrToL,
> >                 T=DNS/RFC822/X-Unix,
> >                 A=procmail -Y -a $h -d $u
> > Mprog,          P=/bin/sh, F=lsDFMoqeu9, S=EnvFromL/H...
             HERE----------------^

I am not sure what I did, or what the purpose of Mprog is.