Capt P
You may be exacerbating this problem yourself.
I originally registered with a hotmail address but now I can't change my profile as hotmail addresses are rejected as part of your validation.
Should I wish to own up that I am really a child molester spending time at Her Majesty's Pleasure I would be also forced to change my address to
[email protected], or whatever - surely unneccessary scope for error and thus hassle for you?.