We've just installed zimbra 5.0.13 on centos 5.2.
First install was done without imap proxy.

Now, we'd like to activate nginx in order to tell nginx to use separate commercial certificates by modifying nginx.conf and its included files.

Is that possible ? If yes, do you know some docs which could help^?

We've tested to activate the service from the admin interface, but it doesn't start correctly so we've reverted the ports so that proxy doesn't use standard ones.