Your email address is q.com. The program does not recognize nor allow a 1 letter domain for emails such as "q", as a tone of spam generally comes from domains with a single letter - even though yours is coming from Qwest.
Enter your email as
hunter1.1@XXXq.com. Then in the body of your ad, also put:
"Please remove the XXX from my email address before sending me an email"
And that should get you in there.
Hope that helps! Also, I think you can request that Qwest five you an @qwest.com email.