Unable to send emails from Relay Connector

Hello Team,

We deployed an new Exchange 2013 server CU8 , On the CAS Server Created an receive connector for Relay and enabled anonymous only and also added the AD permission for the receive connector "Ms-Exch-SMTP-Accept-Any-Recipient", Still I am unable to send emails from the application , We can able to telnet but Emails getting failed when sending from application, Below is the collected information from the receiver Connector logs "504 5.7.4 unrecognized authentication type"

Receive connector settings - On the security enabled TLS and anonymous

Regards

Mohammed Eliyas