Subj : MSGID To : Rob Swindell From : Carlos Navarro Date : Sat Feb 05 2022 11:03 am 04 Feb 2022 18:33, you wrote to Oli: RS> But that's kind of irrelevant as the field does not *have* to be a RS> valid return address for the originating networking; it can be RS> whatever that developer decides will make the message-ID the most RS> useful. In my opinion, uniqueness is the most important and useful RS> attribute of a message-ID, so anything that improves its uniqueness is RS> a virtue. +1 If SBBS-style MSGIDs are harmless as it seems and other developers decide to use them too, it could become a standard. Carlos --- GoldED+/W32-MSVC 1.1.5-b20180707 * Origin: Costa Blanca, Spain (2:341/234) .