CloudFlare Hotfix appears to have been successful, error rates returned to normal.
Background jobs (emails) are backed up some but will be clearing up soon.
Posted Dec 31, 2016 - 19:18 MST
Update
Cloudflare has told us "Errors should be coming down, we're in the process of rolling out a hotfix globally."
Posted Dec 31, 2016 - 19:04 MST
Monitoring
Monitoring DNS issues across CloudFlare's network and working with them to get a resolution as soon as possible. Sporadic outages across network.