Q: I am not receiving any emails and cannot send any out.  I went to Connection Doctor which says my email is connected.  I am getting emails on my iPad and iPhone but not on my Mac.  Can anyone help?

Thank you for your suggestions.   I tried them all.  I am able to send emails and I  can access my email if I go through the yahoo website.  The Connection Doctor shows all is fine.   I even asked Apple Support for help.  A technician walked me through several areas to check and everything checked out.  After some research he said that Yahoo Mail is having issues and others are experiencing problems.  I contacted Yahoo but got no help there.  Guess I'll just check my email through the Yahoo site or on my iPhone.