Well, TT can change the validation method to none, eliminating email verification, but I think he likes it this way. The email itself cannot really be changed, it simply registers as spam because it is like spam: sent out by software (vbulletin), sometimes in great quantities; appearing to have no real sender (Although it SHOULD); and, especially if you are behind the spam blocker of a large corporation or ISP, says the same thing as countless other emails, a typical sign of spam.
Only TT can change this.