My HO is connected to my stores with VPN connection. the problem is when sending jobs to stores the job fail to send and show the below message in DDL Monitor. and test connection from these stores in distribution location are working fine.
Cannot send DD Job Header to 11.11.12.11:16860, retry later >> The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. >> The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.