Replication on dovecot 2.0

Hi Guys

I'm running an Ubuntu 12.04 LTS server and not being particually inclined to upgrade I'm wondering what options I have for replication as it appears to be running dovecot 2.0.19.

I saw the wiki page about replication and whilst it says you should use 2.2+ it doesn't say what the minimum requirements are, so I tried doing what it says but I get:

Fatal: Plugin 'replication' not found from directory /usr/lib/dovecot/modules

Any ideas or tips.

Thanks

Tom