Importing/moving an older cyrus message tree into a new system, without IMAP

[Shuvam Misra]

> Annotations are defined in RFC 5257.
> 
> They allow an admin to add metadata to a mailbox (or the server). The
> cyradm utility sets annotations with its internal info, mboxcfg, and
> setinfo commands.

Okay, checked. Don't know where these things are used, other than expiry
and sieve, but at least I got the basics.

> >What are mailbox keys?
> 
> It's for URLAUTH. See RFC 4467, and:
> 
> http://www.cyrusimap.org/docs/cyrus-imapd/2.3.16/internal/database-formats.php

Thanks for the pointer. Still reading.

Shuvam