Question about message id

[Cameron Simpson]

On 09Apr2024 07:11, Michael Kjörling <ba47c4919fb5 at ewoof.net> wrote:
>On 9 Apr 2024 07:32 +1000, from cs at cskk.id.au (Cameron Simpson):
>> _Or_ you could "set sendmail=" to a script of your own to add a 
>> message-id
>> header - that is what mutt uses to deliver the message to a mail system -
>> you could add a header there then pass the message on to whatever you had
>> mutt using before.
>
>Wouldn't that at a minimum cause a discrepancy between the message-ID
>of what is actually sent, and of what is stored in the Fcc?

If mutt made one, which I gather it actually does (I had thought not).  
Agree such a script should never replace an existing message-id.

Cheers,
Cameron Simpson <cs at cskk.id.au>