What is the function of the X-UID header in mbox format?
Mozilla Thunderbird 0.5 seems to regard it as a simple numbering of the messages; i.e., that the first message in the mbox should have X-UID: 1.
Dovecot seems to treat it simply as an ordered unique identifier. Thus, the first message in my actual mbox has X-UID: 3849658. (There are only a few dozen messages in the box.)
Running Thunderbird 0.5 against a Dovecot IMAP server with mbox format, Thunderbird displays these UID numbers in the message list, which is fairly useless -- I want a numbered list of my messages starting at 1 (which Pine, for example, is happy to provide).
I'm just wondering whether this is Dovecot's fault, Thunderbird's fault, or an ambiguity in the mbox standard.
thanks, Paul