We're currently planning an upgrade to 8.6 from 8.x.
One of the new features in 8.6 is zimbra-dnscache which on the face of it seems like a good idea. However the server is behind a firewall and we're currently using dnsmasq to implement a split DNS and deal with the NAT situation.
After a bit of playing and a lot of searching I can't find anything written about zimbra-dnscache and split DNS. Is this possible or should I just configure dnsmasq to cache lookups? I would prefer to use the Zimbra solution but split DNS is a must.