I have checked the ticket system and was not able to see any issues in submitting one. I would appreciate if you can contact us via Live Chat, irc or instant messenger if you see it again so that we can see what is going on.
Please open a ticket via our help desk (link on my signature an on the top menu) and include your cpanel logins as well as a sample of the email that you got so that I can check this out for you.
Each email account under your domain has a separate login. Please go to http://nospam.totalchoicehosting.com/, click on the Forgot Password link and give the email account on the next window.