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Alright, first off your email address is the right one, right?
Secondly, is your server allowed to send emails out over the internet? (New one, but I have recently dealt with some hosts that don't enable mailing beyond their networks unless asked).
Thirdly, have you tried changing your email in the contact us module to check to see if it is a problem with your email? (unlikely, but worth a shot anyway)
Thirdly, in your admin panel under prefs --> mail setup how are you sending out mail? With php mail() or sendmail or smtp?
If sendmail or smtp, make sure the settings are configured below.
Lastly, if php mail(); we could always try getting you to use a php page that will test to see if your php mail() is working properly...