[encode]

Interestingly, when I connect via the external ip address (ie not loopback adapter) I get a different message -

ERROR: zclient.IO_ERROR (invoke Remote host closed connection during handshake, server: <ip address here>) (cause: javax.net.ssl.SSLHandshakeException Remote host closed connection during handshake)

Edit: Ok, thats because I added :389 to the end of the ip address. The same thing happens when I add :389 to the ip address of the master ldap server.