Maintenance work was carried out in April on deprecating older, insecure versions of the TLS protocol on our Delivery API (please see https://www.contentfulstatus.com/incidents/1svf18qn64qy
In November we detected a portion of our Delivery infrastructure where this was not completed and scheduled a final change (https://www.contentfulstatus.com/incidents/7l026k1bgw57
), but this work was rolled back due to a very small percentage of customers being unable to handle Server Name Indication (https://www.contentfulstatus.com/incidents/6dk8l0mkcnpq
We are now ready to complete this work, which is scheduled for Monday January 8th 10:00 UTC. It should be transparent to all Delivery API clients. As always we are happy to help through our Support department should you have any issues.