TF271001: The server response was: 4.4.1 Connection timed out type SmtpException. TFS Email Notifications Delayed or Not Sent

by XDK 17. July 2013 19:53

Detailed Message:

TF271001: An error occurred while attempting to send an e-mail notification to the following address: email id. Further e-mail notification errors that occur within the next five minutes might not be logged. Verify that the e-mail notification settings are correct in the Team Foundation Administration Console.
Exception Message: Service not available, closing transmission channel. The server response was: 4.4.1 Connection timed out (type SmtpException)

Error :

TFS Email Notifications Delayed or Not Sent


I started experiencing problems with TFS alert notification mails. TFS Email Notifications were Delayed or Not received. The TFS alert notification was working fine for the past 2 years.


Following are the investigation done to fix the notification problem

1. Verified the SMTP server and found out no problems with it. (Anonymous sender was enabled in Exchange for
2. Verified whether "Visual Studio Team Foundation Background Job Agent" service is running in TFS App tier. Service was running fine. (Restarted the service too)

3. I ran the follwoing query to find tfs job failures in the tbl_JobHistory table in the Tfs_Configuration database

SELECT TOP 10 DATEADD(hour, -7, StartTime) as StartTimePDT, Result, ResultMessage
FROM [Tfs_Configuration].[dbo].[tbl_JobHistory] WHERE JobId = 'A4804DCF-4BB6-4109-B61C-E59C2E8A9FF7' AND Result <> 0

Note: The JobId GUID for the “Team Foundation Server Event Processing” job with the namespace: “Microsoft.TeamFoundation.JobService.Extensions.Core.NotificationJobExtension” is 'A4804DCF-4BB6-4109-B61C-E59C2E8A9FF7'

Query result:

"There were errors or warnings during notification delivery.    35573/35598 emails delivered.  0/0 soap notifications delivered.   25 errors.  0 warnings.    Set /Service/Integration/Settings/NotificationJobLogLevel in the TF registry to 2 to see errors and warnings"   

4. Queried [dbo].[tbl_EventNotification] table in the [Tfs_DefaultCollection] database to see for failures.

SELECT * FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification]

Found many records with failed status.

5. Deleted all records with failed status

Delete FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification] where [status] = 'failed'

Note : I dint see any harm in deleting all the records from FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification]

Delete FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification]

6. Queried [dbo].[tbl_EventNotification] table in the [Tfs_DefaultCollection] database to see the notification event backlogs count.

SELECT * FROM [Tfs_DefaultCollection].[dbo].[tbl_ClientEvent]

Found around 1000 pending events that need to be processed.

7. Deleted all pending events backlogs

Delete FROM [Tfs_DefaultCollection].[dbo].[tbl_ClientEvent] 

Verified the fix by trigging the new alerts, All the alerts got processed and also received the notification mails.

link to turn on verbose log

link to Decrease or Increase notification delay settings in TFS


Tags: ,

Azure DevOps on-premises | TFS 2010 | TFS 2012

Comments are closed

About the author

My name is Xavier Dilip Kumar Jayaraj having 16+ years of IT experience which includes solid experience and depth Knowledge in Application Life Cycle Management, Configuration Management, Implementation and Support using TFS on-premises and Azure DevOps. I have invested in gaining DevOps knowledege to expertise with Cloud Computing providers namely Microsoft Azure and Amazon Web Services in recent years. I am very positive to learn and adapt emerging technologies to client’s environment.

Microsoft Certified: Azure Administrator Associate

Microsoft Certified: Azure DevOps Engineer Expert

DevOps Engineer Certificate Program | Transcript 

OTP-AWSD5: AWS IoT: Developing and Deploying an Internet of Things

[PCEP-30-01] PCEP – Certified Entry-Level Python Programmer

Quotes I Like

"Failure will never overtake me if my determination to succeed is strong enough."  - Dr. APJ. Abdul Kalam

"Always be yourself, express yourself, have faith in yourself, do not go out and look for a successful personality and duplicate it." - Bruce Lee

"Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important." - Bill Gates

"Innovation distinguishes between a leader and a follower." - Steve Jobs



The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.