openvpn.auth-user.php: ERROR! Could not bind to LDAP server vpn-ad5.rothco.com. Please check the bind credentials

[pfmatt]

Hello,

We have an existing openvpn setup done by my predecessor which is working fine sending requests to an active directory server. However we need to raise our forest level for another project and it has come time to promote new DCs and demote the old ones. I have tested copying the existing backend server to another entry with all of the same settings except for name and IP address, pointing to one of the new servers. However when I edit the ovpn server in pfsense to point to that server I get the error in the title when connecting.

Windows firewall is disabled. I am able to connect using ldp.exe without issue. I am not sure where to go from there? If more information is required please let me know.