We are updating the SSL certificate used for the following endpoints:
eu.zuora.com - All EU Production Endpoints (soap.eu.zuora.com,dataloader.eu.zuora.com,zconnect.eu.zuora.com,static.eu.zuora.com,rest.eu.zuora.com,aqua.eu.zuora.com)
*.zuora.com - US Production Rest and API, Sandbox, and PT1 (*zuora.com)
rest.pt1.zuora.com - US Production PT1 Rest Endpoint
We are updating the SSL certificate used for the endpoints listed above from Symantec to Comodo, Digicert, or AWS issued certificates.
https://community.zuora.com/t5/Release-Notifications/ACTION-REQUIRED-Maintenance-to-Update-SSL-Certificate-for-zuora/bc-p/24857#M593