Fab,
The email address you are using looks like a valid one. Using a real email
address in the newsgroups is generally a no-no as the spamers troll for
anything that looks like an email address. It may already be too late to
keep them from using the email address you used. A suggestion is to make
your email address something like (e-mail address removed). For newsgoups it is not
necessary to use your actual email address. Also it is better to use
something not real (nomail.com instead of gmail.com for instance) so that
the real isps are not hit as bad with bouncing mail.
Michael