valid_whois_result is called too many times (unnecessarily)

Searching for MX appears to be called too many times, make it quieter

traceroute for more info (Suggested by John McInnes <john@dissension.net>

Add timeouts to finger because it can take a long time

If attacker responds to SMTP, send the complaint to root and
postmaster of his local machine.

Automatic processing of followups and attacks via .forward