DMARC Spoof Detection, Ireland

Ten most active networks sourcing DMARC failures from Ireland:

Amazon and Microsoft together account for 82% of failure volume from this country. Concentration in a small number of networks suggests targeted infrastructure rather than diffuse compromise.

Compared with peer geographies in Northern Europe, Ireland's failure volume is above the regional median. Countries in this region collectively contributed 4% of failures observed.

Country-level patterns don't imply that mail from Ireland is inherently malicious. Many failures reflect misconfigured legitimate senders, forwarded messages that break authentication, or automated infrastructure operating without authorization. Domain owners investigating a specific failure should look at the source IP and network details rather than the country alone. Our DMARC guide explains how to interpret these signals in your own reports.