I quite getting email notices of comments from WordPress

I was originally on a Wordpress.com site. I received email notices when someone completed my contact box AND when they made comments and when I replied the commentor received my reply via email also. I then got web hosting and quit gettings any email notices. I noticed it was going to an "[email protected]" This was not an email I set up and do not recall being prompted to input any email addresses during the WP installation process. I did add my email address under Settings - General AND have the options under Settings - Discussion set as E-mail me whenever "Anyone posts a comment" and 'A comment is held for moderation". When I reply to a comment in now shows my correct email address but now I am still not receiving any email notices of comments to my blog. Any help to fix this issue greatly appreciated. I would like to know how the invalid email address of "[email protected]" ever came from. I could never find where this email came about and was not listed anywhere in all the WP settings I went through in the dashboard. General InMotionHosting Technical Support was unable to help me.