Neither is blocking by user-agent. You can spoof a user-agent more easily than you can jump to a new IP.
-----Original Message----- From: Mike Slinn [mailto:[email protected]] Sent: Tuesday, March 1, 2016 11:24 AM To: [email protected] Subject: Re: [Pound Mailing List] Blocking spambots Blocking by IP address is not practical for a botnet -- To unsubscribe send an email with subject unsubscribe to [email protected]. Please contact [email protected] for questions. -- To unsubscribe send an email with subject unsubscribe to [email protected]. Please contact [email protected] for questions.
