These best practices and white papers represent the cooperative efforts of M3AAWG members to provide the industry with recommendations and background information to improve messaging security and protect users. M3AAWG best practices are updated as needed and new documents are added as they become available.
ESPs take on significant risk every time a new customer sends email. A bad client can undermine the sending reputation for the ESP’s other clients as well as inflict abuse at recipient domains. This paper reviews some vetting practices to avoid these problems.
This paper briefly discusses how an DNS attack works, the impact of this threat, proposes a solution and discusses the advantages and disadvantages from a technical, business and regulatory standpoint
Recommendations include blocking unauthorized access to and from port 25, requiring authentication, and aggregating email traffic through a SMTP server that is controlled by the service provider
Outlines a voluntary set of principles for messaging system operators that discourages bulk messaging abuse of peer-to-peer messaging platforms