Description of problem:
emacs Mail-mode adds the following extra headers:
(*) a blank line
(*) a repeated From: header
(*) a repeated To: header

Version-Release number of selected component (if applicable):
emacs-21.4-17

How reproducible:
Simply compose a msg using RMAIL-mode, and read it using whatever MUA you like.

Steps to Reproduce:
1. Compose a msg in emacs running under FC6.
2. Read it using some MUA (I use emacs RMAIL mode), and notice the blank line
and the extra headers.
  
Actual results:
The aforementioned extra three lines.

Expected results:
To *not* get these three lines.

Additional info:
I am attaching a full description, explaining some experiments.
BTW, this is similar to bug 195736; however, that bug is for Fedora Legacy RHL9,
whereas this bug is for FC6.