GWPNS to only accept connections using TLS1.2 or above

https://support.microfocus.com/kb/doc.php?id=7024762

On August 10th, Micro Focus is planning on moving GWPNS to only accept connections using TLS1.2 
or above.
 
This will affect customers using Messenger 3.x iOS clients connected to a 3.x backend.  This will also affect those CalDav customers who have specifically disabled TLS1.2 as the old NPNS did not support TLS1.2.
 
For Messenger 3.x customers, the solution will be to upgrade to Messenger 18.x.  For CalCav customers, the change will need to be made to the configuration files to disallow TLS versions before 1.2.