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

[alister]

On Tue, 06 May 2014 19:47:54 +1000, Chris Angelico wrote:

> On Tue, May 6, 2014 at 7:15 PM, alister
> <alister.nospam.ware at ntlworld.com> wrote:
>> On Mon, 05 May 2014 19:51:15 +0000, Grant Edwards wrote:
>>
>>> 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.
>>
>> Is this required or just being polite?
>> what I mean is does the standard state the headers must be in a
>> particular order or can they appear anywhere, you may be spending time
>> trying to resolve an issue that does not need fixing.
> 
> Yes, it's required. RFC 2821 [1] section 3.8.2 says "prepend".
> 
> ChrisA
> 
> [1] http://www.ietf.org/rfc/rfc2821.txt

oh well, so much for the easy route :-)
This suggests the email module could do with amending so that headers can 
be pretended as appended.




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