Push Notification cert server broken for (old) MacOS Server?
We maintained group calendars on MacOS Server until Apple removed the functionality in High Sierra. So instead, we dedicated an old surplus Mini to run MacOS Server on Sierra and continue serving just our calendars.
This worked fine until recently. The Apple Push Notification certificates need to be renewed every year, usually just a couple of clicks. But when I tried it on Friday, I got "An unexpected error (-80010) has occurred." I let it sit for a few days in case it was a temporary server outage, but it persists. I fear that perhaps Apple has decommissioned the servers that hand out the certificates. Has anyone else encountered this?
Mac mini, macOS 10.12