Boring Title Slide
An inbound SMTP proxy...
...placed between the Internet and your existing SMTP server
...that throttles the connection with the remote MTA if and as it receives spam.
Why?
Reject at SMTP Time
Tempfail
Really Tarpit
Launch External Processes
What IS Spam?
Initial Approach
Lesson 1: Don't Tarpit Yourself
Lesson 2: Expect Classifiers To Do Less
Lesson 3: Allow Classifiers To Do More
Lessons Applied
TarProxy-Specific Headers
Taking Action
Trigger Example
Caveats
Challenges
Current Status
Author: Marty Lamb
E-mail: mlamb at martiansoftware dot com
Homepage: http://www.martiansoftware.com/tarproxy