On 16.01.21 07:42, Ron Garret wrote: > Because not every email has one. RFC5322 doesn’t require them. > > On Jan 15, 2021, at 6:30 PM, @lbutlr <[email protected]> wrote: >> Why not simply use the message-id?
(Also, you can legally have several e-mails with the same Message-ID in your mailbox; e.g., someone addressed it to two aliases that both expand to you, just to name one possibilty where *both* go through *sieve* as well.) Regards, -- Jochen Bern Systemingenieur Binect GmbH
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