Add "Received:" header to email msg in correct position?

[Grant Edwards]

I'm working on a Python app that receives an e-mail message via SMTP,
does some trivial processing on it, and forwards it to another SMTP
server.

I'd like to do the polite thing and add a "Received:" header, but I
can't figure out how to get Python's email module to add it in the
correct place.  It always ends up at the "bottom" of the headers below
From: To: etc.  It's supposed to go at the above all the Received:
headers that where there when I received it.

-- 
Grant Edwards               grant.b.edwards        Yow! With YOU, I can be
                                  at               MYSELF ...  We don't NEED
                              gmail.com            Dan Rather ...