When clicking on "Directory Explorer" the below error is returned:
Warning: ERROR: The LDAP server returned an unknown error. at System.DirectoryServices.Protocols.LdapConnection.Connect(). Platform: ldap Domain: :<PORT> Container:
Or when trying to "Validate DN" the following error is shown:
The distinguished name <DN> ERROR: The LDAP server returned an unknown error. at System.DirectoryServices.Protocols.LdapConnection.Connect()
1: From the LDAP managed system, go to the Details | Connection tab. Ensure the "Domain Name" has been filled in with the FQDN that the LDAP server serves.
2: Ensure the DNS server TPAM is using has DNS records for the LDAP server. If the "Domain Name" is yourdomain.com, TPAM will lookup _ldap._tcp.yourdomain.com, if this fail it will then do a DNS A record lookup for yourdomain.com. One of these lookups must return the address of the LDAP system "Auto Discovery" to work.
(NOTE: The IP/hostname entered on the LDAP system itself will be ignored, and the above IP address returned from DNS lookup via SRV records will be used.)