On Sat, 9 Jun 2007, Rob Mueller wrote: > So - added is a new option "uuidmode" in imapd.conf. Set it to md5 and you > will get UUIDs of the form: 02(first 11 bytes of the MD5 value for the > message) which takes up the same space, but allows pretty good integrity > checking. > > Is it safe? - we calulated that with one billion messages you have a one in > 1 billion chance of a birthday collision (two random messages with the same > UUID). They then have to get in the same MAILBOXES collection to sync_client > to affect each other anyway. The namespace available for generated UUIDs is > much smaller than this, since they have no collision risk - but if you had > that many delivering you would hit the limits and start getting blank UUIDs > anyway. does the IMAP spec specify how large a UUID can be? David Lang ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
