FAQ item I8 mentions the comcast.net truncation option but no solution.
This was discussed here before and a workaround given:
http://lists.ccil.org/pipermail/fetchmail-friends/2003-July/003669.html
Eric the promised to update the FAQ:
http://lists.ccil.org/pipermail/fetchmail-friends/2003-August/003701.html
But this apparently never happened.
I wasted a bit of time discovering the same solution (since the
workaround wasn't in the FAQ I never thought of searching the archives
:-( ).
--Guido van Rossum (home page: http://www.python.org/~guido/)