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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.

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March 31, 2019

M3AAWG DKIM Key Rotation Best Common Practices, March 2019

To minimize the risk of active DKIM keys being compromised, they should be changed frequently. This document was updated in March 2019 and discusses why keys should be rotated, how frequently they should be rotated, and suggests the best common practices for doing so.

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February 17, 2019

M3AAWG Border Gateway Protocol (BGP) Flowspec Best Practices

Flow Specification (Flowspec) is a new type of Network Layer Reachability Information (NLRI) for the BGP routing protocol. It was originally developed to help mitigate DDoS attacks but its use has expanded to numerous other applications.

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January 01, 2019

M3AAWG Position on Email Appending, Version 1.0.1

In marketing terms, “appending” – also known as "e-appending" or "e-pending" – is the practice of taking demographic information known (or assumed) to be related to a particular customer and matching it with other data. It is the position of M3AAWG that this is an abusive messaging practice.  The January 2019 Version 1.0.1 is updated to include the European Union's GDPR and CASL.

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December 20, 2018

M3AAWG Best Current Practices for Reporting Phishing URLs

Phishing continues to be a significant problem for hosting companies, mailbox providers, brand owners and, of course, for every internet user. This document iinforms all of these groups on the best current practices for reporting phishing URLs.

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June 01, 2018

A M3AAWG Introduction to Addressing Malicious Domain Registrations

This document focuses on defining malicious domain names and provides a non-exhaustive list of possible actions that can be taken to address them.

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