On Tue, 10 Mar 2009, deiva shanmugam wrote:
Can anyone please let me know, if control characters like vertical
tab, Form feed, page eject etc are available in the header, what has to
be done, when relaxed canonicalization for the headers is followed?
Example:
Content-Type:*^L*multipart/alternative;*^K*
boundary=^M"----=_NextPart_000_0000_JLZRZLJO.OULDWYUC"
^L (ASCII 0x0C or "new page") and ^K (ASCII 0x0B or "vertical tab") are
illegal in header fields according to RFC5322 (see section 2.2). ^M
(ASCII 0x0D or "carriage return") is only allowed when doing header
folding, which means they must also be followed by whitespace.
So the above example is complete gibberish according to RFC5322 and, thus,
to DKIM as well.
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