Support for multiple SSL certificates in Zimbra for all protocols
I'm pleased to announce that our Zimbra service now supports multiple SSL
certificates for all protocols (except SMTP - coming soon!). This is
something that cannot be done with a standard Zimbra installation.
For our resellers who currently have their own SSL certificate installed
for the Zimbra UI, we've added POP3S and IMAPS support using the same
certificate and hostname.
For those interested in the technical side of how this was accomplished;
we've modified our frontend lvs cluster servers with Zimbra versions of
nginx, set to use additional nginx config files for each reseller. Nginx
talks to our Zimbra servers so that it can direct any incoming connection
to the correct backend Zimbra server hosting the mailbox being requested.
These lookups are cached using the supplied memcache.
