Earlier this year we introduced a Cyrus 2.2 IMAP proxy server in front of our Cyrus 2.2 back-end server. This was the first part of the process to move our users' mailboxes to a Cyrus 2.3 back-end server. I am now looking at transferring our users to the new back-end server. The XFER command seems to do the job perfectly, except for the seen and subscription databases because we are changing formats from flat to skplist. Looking at the telemetry, it appears the XFER command just dumps everything raw and the other end slurps it in without interpretation. We get lots of errors in the logs[1] and unfortunately the sync client doesn't take too kindly to this either, and bails out! Our users won't accept losing their seen state. I can convert the seen state before/after the XFER with a bit of work, however does anyone knew of a cleaner solution that saves me having to run two different processes? We're running Solaris 10. Our old back-end server is 2.2.12. The new back-end server is running 2.3.13. Our front-end server is 2.2.13. Regards, Dave. David Mayo Networks/Systems Administrator University of Bath Computing Services, UK [1] Oct 28 13:17:05 sauber.bath.ac.uk imap[7925]: [ID 639319 mail.error] skiplist: invalid magic header: /opt/etc/imapd/user/b/bucsuser.seen.7925 Oct 28 13:17:05 sauber.bath.ac.uk imap[7925]: [ID 558109 mail.error] skiplist: closed while still locked Oct 28 13:17:06 sauber.bath.ac.uk sync_client[7931]: [ID 284028 mail.error] USER received NO response: IMAP_MAILBOX_NONEXISTENT Failed to access inbox for bucsuser: Mailbox does not exist Oct 28 13:17:06 sauber.bath.ac.uk sync_client[7931]: [ID 639319 mail.error] skiplist: invalid magic header: /opt/etc/imapd/user/b/bucsuser.sub Oct 28 13:17:06 sauber.bath.ac.uk sync_client[7931]: [ID 558109 mail.error] skiplist: closed while still locked Oct 28 13:17:06 sauber.bath.ac.uk sync_client[7931]: [ID 404664 mail.error] IOERROR: System I/O error Oct 28 13:17:08 sauber.bath.ac.uk sync_client[7931]: [ID 639319 mail.error] skiplist: invalid magic header: /opt/etc/imapd/user/b/bucsuser.sub Oct 28 13:17:08 sauber.bath.ac.uk sync_client[7931]: [ID 558109 mail.error] skiplist: closed while still locked Oct 28 13:17:08 sauber.bath.ac.uk sync_client[7931]: [ID 404664 mail.error] IOERROR: System I/O error Oct 28 13:17:12 sauber.bath.ac.uk sync_client[7931]: [ID 639319 mail.error] skiplist: invalid magic header: /opt/etc/imapd/user/b/bucsuser.sub Oct 28 13:17:12 sauber.bath.ac.uk sync_client[7931]: [ID 558109 mail.error] skiplist: closed while still locked Oct 28 13:17:12 sauber.bath.ac.uk sync_client[7931]: [ID 404664 mail.error] IOERROR: System I/O error Oct 28 13:17:12 sauber.bath.ac.uk sync_client[7931]: [ID 912450 mail.error] Error in do_sync(): bailing out! ---- 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