scope:

This Recommendation emphasizes technical strategies for countering spam and also includes general characteristics of spam and main objectives for countering spam. Furthermore, recognizing that there is no single solution to resolve the spam problem, this Recommendation also provides a checklist to evaluate promising tools for countering spam.

This Recommendation describes technical strategies in general and does not identify technical strategies for any specific types of spam. In addition, this Recommendation gives a hierarchical model of general categories that can be targeted to establish an efficient and effective infrastructure for countering spam. The model includes the following parts:

• equipment strategies;

• network strategies;

• service strategies;

• filtering strategies;

• feedback strategies.

In practice, this Recommendation provides technical strategies for countering various types of spam that an administration considers to be inappropriate, in alignment with national laws and policies.