Hello,
i had much better performance with mailutil from UW-Imapd. It uses the IMAP-protocol like imapscyn but is not a scipt but a binary program and uses the imap APPEND command and does noe checks to see wich E-Mails are on the new server.
and I hope it only deletes messages from the old server if they are transfered succesfully to the new server? Does it keep the flags of the messages, too? Does it also create required folders and subscribe them (if they have been subscribed on the old server)? If you can answer everything with "yes", then I definetely should have a look at it, because while imapsync works well in general, it is really slow.
Regards Marten ---- 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