How to Use Dmarc to Protect Yourself Against Spam, Phishing, and Password Harvesting

The Domain Name System (DNS) is a directory service where human-friendly computer hostnames are associated with IP addresses. We have published the Dmarc standard in RFC 7490 to provide a confidential reporting mechanism for domain names (domain name system records) deployed via the DNS protocol. This document defines the exact syntax of a Dmarc report to ensure interoperability between different implementations of this standard. Dmarc is different from most other financial reports because it provides real-time insights into how companies are running their business. It is designed to help small business owners understand how their accounts are performing so that they can make informed decisions about how to improve their cash flow and increase profitability. The unique design of Dmarc Reports makes it easy for anyone to analyze the performance of their bank accounts in real-time. How is Dmarc different from other financial reports?

Dmarc records are sent from domain owners to email providers to notify them of specific domain name registrations (or transfers), and are used primarily as defense mechanisms against certain types of email abuse. Dmarc reports provide an easy way to report phishing attempts, bulk emailing, and other similar malicious abuse. In the past few years, we have seen a growth in the number of information technology professionals who are interested in learning about Dmarc Reports. This is particularly true of developers and testers who are looking for ways to improve the performance of applications they build for customers. Today I want to review one reason why you might want to start learning about Dmarc Reports and some reasons why you might not.