I jumped the gun a bit. It didn’t show anything in the logs at first, but eventually came up with an invalid email error.
Our AD is used for accounts only and dosen’t have the email attribute populated. I put the email address in the AD and it seems to work now.
I also tried using the principle user name which user@ad.company,com in it. I’m assuming its trying to validate the email address is “something”@“something”.“something”.
All is good now, thanks for your help.
-David