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Event ID: 6011 Source: TFSServices

Source
Level
Description
TF53010: An unexpected condition has occurred in a Team Foundation component. The information contained here should be made available to your site administrative staff.
Technical Information (for the administrative staff):
Date (UTC): <date><time>
Machine: <server>
Application Domain: /LM/W3SVC/3/Root/services-1-128105792145702538
Assembly: Microsoft.TeamFoundation.Server, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a; v2.0.50727
Process Details:
  Process Name: w3wp
  Process Id: 3728
  Thread Id: 3596
  Account name: CTS\tfsservice1

Detailed Message: TF50282: Could not connect to the following e-mail server: <SMTPServerIP>
    Error message: System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed.
   at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)
   at System.Net.Mail.SmtpReplyReader.ReadLine()
   at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)
   at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port)
   at System.Net.Mail.SmtpClient.GetConnection()
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   --- End of inner exception stack trace ---
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at Microsoft.TeamFoundation.Server.WebServiceNotification.SendOneEmail(Boolean plaintext, String to).
Comments
 
This problem can happen when the SMTP server you have specified in your TFS configuration has had it's listening port for SMTP changed from the default of 25. See ME957591 for a resolution.

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