Statistics from the spam filter deployed at Sunburnt SEO:
|filter||blocked||blocked %||left||left %|
|RBL (IP Blacklisting)||3,664||8%||43,259||21%|
|URIBL (URL Blacklisting)||234||1%||43,025||20%|
|Total Spam / Legitimate||170,171||81%||39,557||19%|
This is a mature spam filter, and many spammers have stopping hitting the server since it was set up. At first, the stats were quite different. For example, connection limiting was hugely effective.
Invalid recipients aren't shown in these statistics because the number of recipients per connection or email is so variable. And of course, spammers do everything in bulk right? If you compared the total number of legitimate recipients to the total number of spam recipients it would be practically 0% legitimate.
Roger Keays is an artist, an engineer, and a student of life. Since he left Australia in 2009, he has been living as a digital nomad in over 40 different countries around the world. Roger is addicted to surfing. His other interests are music, psychology, languages, and finding good food. Click here to subscribe to his weekly blog, or stalk him on Facebook and Twitter.