This article offers a way in which customers of the Email Security .cloud Service (ESS) can implement an alternative to the Anti-Spam service Newsletter Detection feature by using Data Protection, where they can configure exceptions and filters based on the header and body contents of the emails.
The solution is designed for situations where the white listing capability of the Anti-Spam service (addresses, domains and IPs/IP Ranges) cannot fully cover all of the particular newsletter type email filtering requirements.
NOTE: The Data Protection policy based solution does not fully replace the advanced newsletter detection algorithms that are found within the Anti-Spam service Newsletter Detection feature. Tweaking and monitoring are required to achieve optimal results.
To create an exclusion condition with emails, we first need to create a custom group
Access Services > Anti-Spam and uncheck the option next to Use Newsletter / Marketing detection.
To achieve the best results you will need to periodically add exceptions and detection criteria to the policy configuration. There is room for improvement and refinement in all of the conditions of this policy, according to your preferences and requirements. Below are clarifications regarding how to work with the conditions.