Squirrelmail header folding

I have encountered an email from Squirelmail where the content type header has been split at a non-whitespace point,
due to an unusually long content type.

Example:

Content-Type: 
     application/vnd.openxmlformats-officedocument.wordprocessingml.documen
     t; name="News.docx"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="News.docx"

As far as I can see, this is incorrect according to the standard, e.g.

http://tools.ietf.org/html/rfc5322#section-2.2.3

Is this intentional?It may be possible for parsers to work around this particular case, but adherence to standards is generally a good idea.George Barwood

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