Exchange 2016 - what encryption ciphers does it use by default?

Hello,



As part of an audit, I need to furnish the encryptions ciphers used by our mail server, which in our case is

an Exchange 2016 CU 17 server.



Specifically, here's the question:



If TLS is being used, are cryptographically strong key exchange and message encryption ciphers being used?



<The preference order of key exchange and encryption ciphers is:



 



1.Key exchange: Elliptic Curve Diffie–Hellman (ECDH), Encryption: AES in Galois Counter Mode (AESGCM)


2.Key Exchange: Diffie–Hellman (DH), Encryption: AES in Galois Counter Mode (AESGCM)


3.Key Exchange: Elliptic curve Diffie–Hellman (ECDH), Encryption: AES-256 (AES256)


4.Key Exchange: Diffie–Hellman (DH), Encryption: AES-256 (AES256)


5.Key Exchange: Elliptic Curve Diffie–Hellman (ECDH), Encryption: AES-128 (AES128)


6.Key Exchange: Diffie–Hellman (DH), Encryption: 128 or 256 bit AES (AES)


7.Key Exchange: RSA, Encryption: AES in Galois/Counter Mode (AESGCM)




  No other key-exchange and encryption ciphers are allowed>



I'm not quite sure how to check and see what it uses.  Can you offer any suggestions?



Thanks in advance.



Regards,

Real-Timer