Refresh Trusted Security Token Services Metadata feed timer job fails on search server

I'm running SP 2013 with 7 servers in my farm. One of my search servers (I have two) fails this job daily at 12AM? Any ideas? I get the following three errors in the ULS log when this job fails.

An error occurred while downloading and parsing the json metadata document. Exception: System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)

at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception) - -- End of inner exception stack trace ---

at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)

at System.Net.WebClient.DownloadData(Uri address)

at Microsoft.SharePoint.Administration.SPSecurityTokenServiceJsonMetadataClient.DownloadMetadata(Uri metadataEndpointUri)

The second one

The Execute method of job definition Microsoft.SharePoint.Administration.Claims.SPRefreshTrustedSecurityTokenServiceMetadataJobDefinition (ID b9c58527-39aa-4051-9c47-1e2fbc17f55f) threw an exception. More information is included below. Unable to connect to the remote server

Finally the third one

Exception stack trace:

at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)

at System.Net.WebClient.DownloadData(Uri address)

at Microsoft.SharePoint.Administration.SPSecurityTokenServiceJsonMetadataClient.DownloadMetadata(Uri metadataEndpointUri)

at Microsoft.SharePoint.Administration.Claims.SPTrustedProviderBase.UpdateFromMetadataFeed(Boolean isFirstTime)

at Microsoft.SharePoint.Administration.Claims.SPRefreshTrustedSecurityTokenServiceMetadataJobDefinition.RefreshProvidersCollection[T](SPTrustedProviderCollection`1 providersCollection)

at Microsoft.SharePoint.Administration.SPTimerJobInvokeInternal.Invoke(SPJobDefinition jd, Guid targetInstanceId, Boolean isTimerService, Int32& result)

any help would be greatly appreciated.