Hi Mike1124,
Firstly I would suggest you to change your account information by login on to http://www.login.live.com/.
Once you have changed your account information like password reset, change of secret question, also would recommend you to change your password every 72 days, try to send a test mail to yourself and check if you are able to send and receive, incase if you find any difficulties to send and receive you emails please post us back so that we can check on the server end.
Stephen thanks for helping the users
Thanks!