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From: Simon Josefsson <jas@extundo.com>
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Subject: Re: weird error message about X-Face:
Date: Wed, 04 Jul 2001 19:49:14 +0200
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Didier Verna <didier@lrde.epita.fr> writes:

>         Hi !
> 
> I'm suddenly (after an upgrade) getting a strange error message when posting
> news. Gnus tells me
> 
> "Couldn't send message via news: 441 437 No colon-space in X-Face: header".
> 
> The *nntpd* buffer however contains this:
> 
> 340 Ok, recommended ID <9hvet6$nh8$4@kualalumpur.lrde.epita.fr>
> 
> but the news can't be posted. I have to remove my X-Faces :-(
> 
> This seems unrelated to my recent patch against nntp: I get the same behavior
> with former nntp.el versions. Having only one X-Face makes no difference. My
> X-Face settings are exactly the same as in this message.
> 
> Ideas ?

Is it related to this one?

2001-06-24  Simon Josefsson  <jas@extundo.com>

	* rfc2047.el (rfc2047-fold-region): The check to skip WSP
	insertion when breaking lines looked for " \t" instead of "[ \t]".
	(rfc2047-encode-message-header): Fold lines even if
	no QP encoding is done.

If not, maybe you could try nailing it down by going backwards in the
CVS history to see what patch caused it.