When using the GroupWise Calendar server to access a GroupWise account via MacMail, if the mac needs to receive push notifications from npns.novell.com, this is not working. The npns.novell.com will only connect via TLS 1.0. There is a line in the GroupWise Calendar server configuration file /etc/init.d/gwcalsvr that needs to be removed as it sets the Calendar Server to use TLS 1.2 or later.
The current workaround is to remove the following line:
from the /etc/init.d/gwcalsvr
This has been reported to engineering