Sam Roberts wrote:
>
> Wrote daz:
> >
> > The Message-Id: headers appear in the ruby-talk archive
> > uniformly with a lower case 'd' and appear to be remailed
> > in that form.  Strictly, this doesn't conform to RFC
> > [...]
> > However, both seem to be widely accepted and created by
> > mail/news servers.
>
> That's because they DO conform to the RFC! The RFCs may spell
> it Message-ID, but field names are case insensitive:
>
>   RFC822 3.4.7 CASE INDEPENDENCE
>
>   ...
>
>   When matching any other syntactic unit, case is to be ignored.  For
>   example, the field-names "From", "FROM", "from", and even "FroM" are
>   semantically equal and should all be treated identically.
>
>
> By the way, this is valid, too:
>
>   Message-iD   :
>
> though many cheesy regex-based parsers may choke on it.
>
> Cheers,
> Sam
>

Hey, thanks for the correction, Sam!
It looks so *big* now that it's exposed :-)


daz