Hi Ken, > 2) The recommendation for Message-IDs is to use a domain name for the > right-hand side
Recommendation or rule? I don't recall. > 4) Some people, for reasons I would classify as "vague", prefer to > generate their Message-IDs locally so their saved copy of the > message has the Message-ID in it. The reason you state seems precise rather than vague. > 7) There's not too much prior art here to crib from because of (3). The first-hop MTAs would be a source of prior art. Most probably let the domain part be given as configuration. I think the existing -messageid option which takes either ‘local’ or ‘random’ should also accept ‘@...’ to allow the user to specify it. This stops using heuristics if the user prefers. Instead of having to state that as a default option in the profile for multiple programs, a new profile component, ‘message-id-domain’, could let it be set once. If it is set then -msgid is implied. -- Cheers, Ralph.