Understanding How Mailing Lists Break DMARC
Explore how mailing lists disrupt DMARC and the limited solution ARC provides.
Mailing lists can disrupt DMARC functionality, causing some subscribers to miss emails. This issue arises from the interaction of standards, and while ARC was developed as a partial fix, it is less effective than many expect. This article details how mailing lists break DMARC and the limitations of ARC.