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From: David Bremner <david@tethera.net>
To: Allan Streib <astreib@indiana.edu>, notmuch@notmuchmail.org
Subject: Re: Bug/Issue: References header doesn't wrap in emacs package
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References: <87612qwh04.fsf@viking.dsc.soic.indiana.edu>
 <87si5t1nhu.fsf@zancas.localnet>
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Date: Fri, 02 Oct 2015 22:21:23 -0300
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David Bremner <david@tethera.net> writes:

> Allan Streib <astreib@indiana.edu> writes:
>
>> Notmuch/0.20.2 (http://notmuchmail.org) Emacs/24.4.1
>>
>> Replying to a message in a deeply nested thread can trigger a complaint:
>>
>>   sendmail: command failed: 550 5.7.1 Delivery not authorized, message refused: Message is not RFC 2822 compliant
>>
>> The problem is a References header that is too long/not wrapped.
>>
>
> Hi Allan;
>
> Thanks for the report.  I can see how notmuch-reply would generate a
> long references header in that situation. We rely on message-mode (part
> of Gnus) to actually send the message, and it isn't clear to me yet if
> message-mode (or some function it invokes) normally folds long headers.

I have reported this as an emacs bug.

  http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21608