I’d like to give it a try, but it just does not connect to metadirectory.
After submitting “ldap://ldapserver.domain.local:712”, it says “Can’t connect to ‘exchange2013.zeteko.local’ on port ‘712’, Can’t bind to ‘exchange2013.zeteko.local’, 49, Invalid Credentials”. No way to give credentials 
Already tried the protocol://user:password@server:port - notation, but no sucess.
Despite of that, the ldap-server is accessible without credentials.