due to several complains about you running a challenge-response system
and sending eMails to persons posting to our lists, we decided to
unsubscribe your address from all mailinglists on our listserver.

Feel free to subscribe again to our lists after you verified that your
challenge-response system is not hitting our users any more. Iff we find
out you subscribed again and your challenge-response system is still up
for mails from lists.debian.org, your address will be banned permanently
from lists.debian.org.