From: https://groups.google.com/forum/#!topic/foreman-users/Qu5SKKyZR20

Just upgraded to Foreman 1.7.3 (from a very old version). One issue we're seeing is if a server is owned by a group, failed puppet run reports only go to the last person listed in that group.

For example, have the following group with members:

Administrators:
- Alfred Pence
- Bob Smith
- Frank Jones

If server web.example.com is owned by Administrators and has a failed puppet run Frank Jones only gets the failed puppet run notice in his email. If we take Frank out of the group, then Bob Smith will get it. Take both Frank and Bob out of the group, then Alfred will get it.