[Dovecot] dovecot director terminate ssl ?

I plan on putting two dovecot directors in front of our backend dovecot pop/imap servers, instead of our current haproxy loadbalancing of the connections -- but how do we handle SSL in such a setup. Will all SSL be terminated on the directors automatically, and then proxyed plain text, or is there any configuration needed to achieve this ?

Does it matter that the directors are v2.0 while the backends are running v1.2 ?

-jf