If you have a @q.com email address (including sub-accounts) and it was created on or after September 20, 2010, this tutorial does not apply to you. Use the following Email Troubleshooting steps.
OR
If you are troubleshooting @msn.com, @hotmail.com, @live.com, qwestoffice.com, qwest.net or a @q.com email address that was created before September 20, continue to the Email Troubleshooting tutorial.