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

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Date Tue, 6 May 2014 20:41:40 +1000
Subject Re: Add "Received:" header to email msg in correct position?
From Chris Angelico <rosuav@gmail.com>
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On Tue, May 6, 2014 at 8:26 PM, alister
<alister.nospam.ware@ntlworld.com> wrote:
> 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@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.

Even if it's special-cased as a dedicated "prepend received header"
method, that would probably do. I can't think of any other headers
where you need to specifically order them rather than appending.

ChrisA

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Thread

Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-05 19:51 +0000
  Re: Add "Received:" header to email msg in correct position? Ethan Furman <ethan@stoneleaf.us> - 2014-05-05 13:01 -0700
    Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-05 20:58 +0000
      Re: Add "Received:" header to email msg in correct position? Tim Chase <python.list@tim.thechases.com> - 2014-05-05 16:09 -0500
        Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-06 02:13 +0000
          Re: Add "Received:" header to email msg in correct position? Steven D'Aprano <steve@pearwood.info> - 2014-05-06 08:22 +0000
            Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-06 14:12 +0000
      Re: Add "Received:" header to email msg in correct position? Terry Reedy <tjreedy@udel.edu> - 2014-05-06 14:16 -0400
      Re: Add "Received:" header to email msg in correct position? Chris Angelico <rosuav@gmail.com> - 2014-05-07 10:13 +1000
  Re: Add "Received:" header to email msg in correct position? alister <alister.nospam.ware@ntlworld.com> - 2014-05-06 09:15 +0000
    Re: Add "Received:" header to email msg in correct position? Chris Angelico <rosuav@gmail.com> - 2014-05-06 19:47 +1000
      Re: Add "Received:" header to email msg in correct position? alister <alister.nospam.ware@ntlworld.com> - 2014-05-06 10:26 +0000
        Re: Add "Received:" header to email msg in correct position? Chris Angelico <rosuav@gmail.com> - 2014-05-06 20:41 +1000
    Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-06 14:15 +0000
      Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-06 14:19 +0000
      Re: Add "Received:" header to email msg in correct position? Chris Angelico <rosuav@gmail.com> - 2014-05-07 00:26 +1000
      Re: Add "Received:" header to email msg in correct position? alister <alister.nospam.ware@ntlworld.com> - 2014-05-06 15:16 +0000
    Re: Add "Received:" header to email msg in correct position? Burak Arslan <burak.arslan@arskom.com.tr> - 2014-05-06 18:11 +0300
      Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-06 15:26 +0000
        Re: Add "Received:" header to email msg in correct position? Burak Arslan <burak.arslan@arskom.com.tr> - 2014-05-07 18:06 +0300
        Re: Add "Received:" header to email msg in correct position? Chris Angelico <rosuav@gmail.com> - 2014-05-08 01:11 +1000
        Re: Add "Received:" header to email msg in correct position? Ian Kelly <ian.g.kelly@gmail.com> - 2014-05-07 16:29 -0600
          Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-08 13:28 +0000
            Re: Add "Received:" header to email msg in correct position? Chris Angelico <rosuav@gmail.com> - 2014-05-08 23:47 +1000
            Re: Add "Received:" header to email msg in correct position? Ethan Furman <ethan@stoneleaf.us> - 2014-05-08 06:46 -0700
            Re: Add "Received:" header to email msg in correct position? Skip Montanaro <skip@pobox.com> - 2014-05-08 09:50 -0500
              Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-08 18:39 +0000
                Re: Add "Received:" header to email msg in correct position? Tim Chase <python.list@tim.thechases.com> - 2014-05-08 13:48 -0500
                Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-09 14:28 +0000
                Re: Add "Received:" header to email msg in correct position? Ethan Furman <ethan@stoneleaf.us> - 2014-05-08 17:00 -0700
  Re: Add "Received:" header to email msg in correct position? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2014-05-07 08:58 +0200
    Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-07 14:32 +0000
      Re: Add "Received:" header to email msg in correct position? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2014-05-08 09:44 +0200
  Re: Add "Received:" header to email msg in correct position? Emre Hasegeli <emre@hasegeli.com> - 2014-05-07 11:11 +0300
  Re: Add "Received:" header to email msg in correct position? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2014-05-07 10:57 +0200
    Re: Add "Received:" header to email msg in correct position? Grant Edwards <invalid@invalid.invalid> - 2014-05-07 14:33 +0000

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