Tom Allison wrote:
> I was porting some email from one imap server location to another and
> ran into a feature of something.  One of them writes message-id as
> 'Message-Id' and the other writes it as 'Message-ID'.  Because of this,
> all the messages are forever different.

Make sure imapsync ignores both (--skipheader '/^Message-ID/i'.
(assuming you are using imapsync).

> 
> All mail is delivered from postfix and will be in the future.
> 
> But I'm asking which of these syntaxes is correct or if there is a
> right/wrong way of writing the headers?  RFC2822 doesn't come right out
> and say it, but all the examples therein are "Message-ID".
> 
> RFC 822 says they are all the same.

Headernames are case-insensitive.

> Both?

So yes, they are both correct.

-- 
  ________________________________________________________________
  Paul Stevens                                      paul at nfg.nl
  NET FACILITIES GROUP                     GPG/PGP: 1024D/11F8CD31
  The Netherlands________________________________http://www.nfg.nl

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