On Thu, 27 Mar 2003 09:38:49 -0800, Bill McCoy wrote: > My requirements include interoperability > with other MUAs
Good. > Similarly, unless I'm missing > something, searching for Message-ID as you suggested is not possible in this > situation: the original message is gone, the edited message of course has a > new Message-ID, and Outlook/Exchange does not preserve the original > Message-ID anywhere in the edited message header or body. Would would the edited message have a new Message-ID? Normally, MUA edits of a message do not change the Message-ID. Yes, that can lead to multiple messages having the same Message-ID in the mailbox. That's why IMAP has UIDs; otherwise we could have used Message-ID instead of creating the UID mechanism. Nevertheless, a Message-ID remains a pretty good way to identify a message; if a Message-ID is duplicated the duplicate is generally either a duplicate copy of the message or a different version of that message. -- Mark --
