I've been getting the error message below in event viewer, that indicates that the Frontend Transport service in Exchange 2013 is unhealthy. We are having random problems with UM not picking up, so I'm investigating every error message I see. So I would like to try to resolve this error message. Thanks for any help you can give me.
Error details:
The client submission probe failed 3 times over 15 minutes.
Server 127.0.0.1 on port 587 did not respond with expected response (OK). The actual response was: 421 4.3.2 Service not available
.
Probe Exception: 'System.Exception: Server 127.0.0.1 on port 587 did not respond with expected response (OK). The actual response was: 421 4.3.2 Service not available
.
at Microsoft.Forefront.Monitoring.ActiveMonitoring.Smtp.Probes.SmtpConnectionProbe.AssertExpectedResponse(SmtpExpectedResponse expectedResponse)
at Microsoft.Forefront.Monitoring.ActiveMonitoring.Smtp.Probes.SmtpConnectionProbe.TestConnection()
at Microsoft.Forefront.Monitoring.ActiveMonitoring.Smtp.Probes.SmtpConnectionProbe.DoWork(CancellationToken cancellationToken)
at Microsoft.Exchange.WorkerTaskFramework.WorkItem.Execute(CancellationToken joinedToken)
at Microsoft.Exchange.WorkerTaskFramework.WorkItem.<>c__DisplayClass2.<StartExecuting>b__0()
at System.Threading.Tasks.Task.Execute()'
Failure Context: 'Server 127.0.0.1 on port 587 did not respond with expected response (OK). The actual response was: 421 4.3.2 Service not available
.'
Execution Context: '220 fqdn.domain.com Microsoft ESMTP MAIL Service ready at Tue, 27 Aug 2013 19:00:20 -0500EHLO SmtpClientSubmissionProbe 250-fqdn.domain.com Hello [127.0.0.1]STARTTLS 220 2.0.0 SMTP server readyEHLO SmtpClientSubmissionProbe 250-fqdn.domain.com
Hello [127.0.0.1]AUTH LOGIN 334 VXNlcm5hbWU6 SGVhbHRoTWFpbGJveGUzZmMxNjQ0MmJhNTQ0MGM4NDM1YjNlODBjYWQxNzcwQHByZWZlcnJlZGNyZWRpdC5jb20= 334 UGFzc3dvcmQ6 ekBLZUZ6JkFrNnBHJTZzbTlkekdpV2k1I3AzZlJ6bF5PLjpCNyZES3RGcCZIUzl1M09JPkB6PXZleC4+QCUhXUdtNFIqX2NxMVVKMj0hUkticHJRRzIwbDRjdCpQenlBVWJjJDN8NGU1R0MwVHpoWXJbPjJOTllaaEAtKV5uZTE=
235 2.7.0 Authentication successfulMAIL FROM: HealthMailboxe3fc16442ba5440c8435b3e80cad1770@domain.com 421 4.3.2 Service not available '
Probe Result Name: 'OnPremisesSmtpClientSubmission'
Probe Result Type: 'Failed'
Monitor Total Value: '3'
Monitor Total Sample Count: '3'
Monitor Total Failed Count: '0'
Monitor Poisoned Count: '0'
Monitor First Alert Observed Time: '8/26/2013 8:00:37 PM'
