Little issue we are running into due to the amount of users we have on our Zimbra Installation. Even though we have 5 External LDAP Authentication servers setup for Zimbra, it seemingly is only authenticating with the first server on the list unless that server goes down (The cuttover to the second server is immediate though).

Now, this is causing issues because that one server can't handle all of the authentication requests, so it is constantly sitting at 100% CPU usage and it can take a very long time to check your mail simply because it is waiting to authenticate.


So, more to the point, what I am asking is, is there a setting I am missing for load balancing across all of the external LDAP servers? Or will it latch onto one server until that server is no longer responding?

If you need any more information, don't hesistate to ask.

thank you