Hello,
Downside: If you have very large messages on the source IMAP servers, you better run the script on a machine with lots of RAM. On my system it died repeatedly with "out of memory" when it was hitting a 32MB message (on-disk size), and the system has 1GB RAM.
strange, I didn't experience this while running a sync for >15.000 mailboxes some weeks ago with even larger messages partially.
It's probably best to run it on a 3rd system, one that's separate from both the source and the destination IMAP servers, otherwise unpleasant things might happen if the script starts to gobble up RAM on the IMAP server. Again, this 3rd system is best if it has lots of RAM if you allow large messages on your source IMAP server.
Thats surely a good advice, but I don't think it is primarily because of the memory usage, but because of the CPU usage. While syncing and checking for differences on source and target server imapsync will use _much_ CPU ressources, especially if you are running several instances of imapsync at the same time to speed up the sync (on different mailboxes of course). The source and target IMAP servers have been pretty idle while the 3rd server running imasync had a load average of >50.
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
