Transactions appear to be going through again for all orgs. We will continue to investigate to determine the underlying cause

CS44 is back up. Still checking NA30

Affected Salesforce orgs include NA30 and CS44

Some customers may be experiencing callout failures with a message stating: Callout failed - Unable to tunnel through proxy. Proxy returns "HTTP/1.0 404 Not Found"

This appears to be happening only with certain Salesforce orgs. We are investigating to better understand the scope and reason for the outage