the regular icon spam works for most when one unsubscribes but for some e-mails when one clicks unsubscribe the following is coming up Forbidden

You don't have permission to access /unsubscribe.php on this server.

Apache/2.4.7 (Ubuntu) Server at marketer.squaretechnewsletters.com Port 80
one cannot stop these unwanted e-mails:

therefore their should be 2 types of spam the first as is not, and a second maybe called: Spam unsubscribe failed so that if the above or similar happens Yahoo becomes aware that there are issues with these types of spam e-mail.