Failed to join domain: failed to lookup DC info for domain 'ldap.examp;e.com' over rpc: The attempted logon is invalid. This is either due to a bad username or authentication information.

Hi there, I keep getting the following error when trying to join aws managed Microsoft AD from a linux ec2 (centos 7)AWS Failed to join domain: failed to lookup DC info for domain ldap.exmaple.com' over rpc: The attempted logon is invalid. This is either due to a bad username or authentication information. ! Joining the domain ldap.example.com failed The command I am running is sudo realm join -U web.service@ldap.example.com ldap.example.com --verbose. The username and PW is correct, I have even changed the password a few times. i have followed the guide here https://docs.aws.amazon.com/directoryservice/latest/admin-guide/directory_microsoft_ad.html But it it doesn't seem to working for me?