not getting emails or pingbacks

I have been operating my first blog Ole Larson’s Folks for a few months. Recently stopped getting emails for comment moderation and pingbacks. Perhaps about the time I upgraded to 2.7 or 2.7.1. All settings on the site including my email address appear correct. I added a second blog this week Anna Larsdatter including an add-on domain, and it has the same problem. Otherwise both functioning normally.