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.
A discussion on improving non-deliverability status notices to better identify abuse issues
Describes four approaches to make dynamic IP addresses more easily obtainable by mailbox providers with a discussion of the advantages and disadvantages of each
A summary of the most effective abuse desk best practices from MAAWG service providers
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