RESOLUTION:
CMN supports the TLS encryption version TLS 1.0.
CMN would be able to transport the mail by negotiating the version of TLS protocol
to using TLS 1.0 between Exchange and Domino even if each of them opened TLS 1.1 or TLS 1.2.
The possible cipher algorithms are listed below:
* The Data Encryption Standard (DES) algorithm
* Rivest's Code 2 (RC2) algorithm
* The Triple Data Encryption Standard (3DES) algorithm
* The Advanced Encryption Standard (AES) algorithm with a 128 bit key
* The Advanced Encryption Standard (AES) algorithm with a 192 bit key
* The Advanced Encryption Standard (AES) algorithm with a 256 bit key
* The Advanced Encryption Standard (AES) algorithm.
* Rivest's Code 4 (RC4) algorithm
NOTE: TLS 1.2 is now supported in the latest hotfix for CMN 3.8.0.25 found here.