Synchronizing two cyrus imap servers?

[Swell°]

Hi, I'm currently running one cyrus imap server in my office, but now i need it to be synchronized with a second one.
The first one is a master
The second one is a slave

When the first server receive a message on a mailbox, i want it to synchronize the second mailbox...

I can't use tools like imapsync, because i can't ask all my users their mailbox password...

Does anyone have an idea on how to do that?

TIA

[bmichaelsen]

you could use procmail as a MDA and forward a copy of every mail with a setup in the global /etc/procmailrc file.