[Question] Remove These Headers and Outlook conversation view
mark at msapiro.net
Thu Feb 15 07:59:46 UTC 2018
On 02/14/2018 05:44 PM, Eoin Kim wrote:
> My question is: does removing Message-ID header will make receiver’s
> Outlook conversation view impossible? My senior person says Message-ID
> might be used for conversation view. I am not really familiar with
> Windows servers so I am not sure what the background mechanism is in
> Exchange server.
The short answer is removing or altering Message-ID: headers will almost
certainly cause more problems than it solves.
I can't speak to Outlook in particular, but almost all mail agents rely
on Message-ID:, References: and In-Reply-To: for threading or
Also, RFC 5322 and predecessors say all messages SHOULD have a
Message-ID:, and while I can't speak specifically about Exchange, it is
possible that Exchange would not deliver a message without one.
Mark Sapiro <mark at msapiro.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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