I've followed the discussion here and I do have a similar case right after I applied Update-2 to TFS 2013 (Update-1). NOTE: Everything used to work fine prior the upgrade.
- Personal alerts DO work, so it is not an obvious SMTP server error.
- Team alerts DO NOT work.
- TFS 2013 IS CONNECTED to Active Directory.
- All users have email addresses.
- No errors whatsoever in event viewer.
I would appreciate the help. Thanks.
I think I figured out what is happening. It all boils down to this: Teams who are not part of Contributors group are not able to receive email notifications.
This behavior is new and was introduced in Update 2 (Update 1 used to work fine).
More discussion about this can be found here
Also, I filled a bug report to Microsoft Connect Feedback here
来源：https://stackoverflow.com/questions/22900091/tfs-2013-update-2-team-alerts-not-sending-emails