I have set up email notifications in TeamCity 9.0.2 and tested it with the email address of my user.
That does work fine, I receive the test emall from TeamCity server.
However, I do not receive any emails when my builds fail. Additionally to the default email notification rules I have added another rule for the <Root Project> if either a build fails or if a build is probably hanging. In neither of these cases I get any email, regardless of any build configuration and whether it is my VCS commit that triggered the build or some else's.
Any ideas what I might need to do?