The publish suddenly stopped working:
{{Dropbox:Connecting from host [JCAEIC-WSVR01]
Dropbox:Connecting with configuration [Default] ...
Dropbox:Caught exception [Exception when disconnecting from server. Message Failed to open connection to server] Sleeping for [2,000]ms before trying again
Dropbox:Connecting with configuration [Default] ...
Dropbox:Caught exception [Exception when disconnecting from server. Message Failed to open connection to server] Sleeping for [2,000]ms before trying again
Dropbox:Connecting with configuration [Default] ...
Dropbox:Caught exception [Exception when disconnecting from server. Message Failed to open connection to server] Sleeping for [2,000]ms before trying again
Dropbox:Connecting with configuration [Default] ...}}

The "Test Configuration" button always returns success, but none of the build jobs can publish