Frozen job for job chain : EXH_EXHRemoteMailbox_Insert/HandleOutstanding

Hello Experts,

EXH_EXHRemoteMailbox_Insert/HandleOutstanding job chain(V8) is going to frozen with below error.

ErrorMessages = (2020-05-26 03:09:03.157) [1777018] Error executing synchronization project (Hybrid Exchange)'s workflow (Provisioning).

[1777292] Error connecting system (Exchange 2010 Connector)!
[System.Management.Automation.ActionPreferenceStopException] Command execution stopped because the preference variable "ErrorActionPreference"
or common parameter is set to Stop: [********.*****.com] Connecting to remote server *****.*****.com failed with the following error message
: Access is denied. For more information, see the about_Remote_Troubleshooting Help topic.
at VI.Projector.JobComponent.ProjectorComponent._AdHocProjection()

at VI.Projector.Database.ProjectorExecutor.Project(ISession session, IProjectionConfiguration configuration, ProjectionOption options, ISystemObject adHocObject, CancellationToken cancellationToken)
at VI.Projector.Projection.Extensions.Execute(IProjectorEngine engine, IProjectionConfiguration configuration, ProjectionOption options, ISystemObject adHocObject, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
---- Start of Inner Exception ----
at VI.Projector.Projection.ProjectorEngine.<ExecuteAsync>d__3.MoveNext()
---- Start of Inner Exception ----
at VI.Projector.Projection.ProjectorEngine.<ExecuteAsync>d__3.MoveNext()
at VI.Projector.Connection.SystemConnection.Resolve[T](Boolean throwIfNotSupported)
at VI.Projector.Connection.SystemConnection.ConnectIfRequired(Boolean doNotSetSchema)
---- Start of Inner Exception ----
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.ActionCallInstruction`6.Run(InterpretedFrame frame)
at System.Management.Automation.PipelineOps.InvokePipeline(Object input, Boolean ignoreInput, CommandParameterInternal[][] pipeElements, CommandBaseAst[] pipeElementAsts, CommandRedirection[][] commandRedirections, FunctionContext funcContext)
at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(Object input, Hashtable errorResults, Boolean enumerate)
Synchronization ended with errors.
You can find more detailed information in the log from Tuesday, May 26, 2020.

Any one can assist wit this as provisioning to exchange has stopped.