On 17/02/2018 00:41, John Hardin wrote:
Isn't MID creation responsability of the MUA and not the MTA? If every MTA would generate a MID when not found in inbound emails rules like SA's MISSING_MID would be useless.Not necessarily safe. If your MTA receives a message without a Message-ID, it is supposed to generate one. And if it does so, it will probably do so using your (recipient) domain...
Daniele Duca
