PCI DSS Compliance
EXT-07Critical

Detect External Mail Forwarding for PCI DSS Compliance

Learn how EXT-07 helps you meet PCI DSS requirements for Microsoft 365 and Entra ID security.

Meeting PCI DSS standards for Microsoft 365 involves implementing controls like EXT-07 (Detect External Mail Forwarding). This guide covers the specific PCI DSS requirements addressed by this control and how to achieve compliance.

How EXT-07 Addresses PCI DSS Requirements

PCI DSS requires organizations to implement controls around detect external mail forwarding. The EXT-07 control provides:

  • Mailbox forwarding rules to external addresses are identified
  • Inbox rules forwarding to external domains are flagged
  • No unexpected external forwarding rules exist

These measures directly support PCI DSS compliance by ensuring proper external security in your Microsoft 365 environment.

Implementation for Compliance

To satisfy PCI DSS requirements with this control:

  • **Enable the control** - Follow the manual configuration steps
  • **Document your implementation** - Record how the control was configured
  • **Maintain evidence** - TrueConfig automatically logs compliance status
  • **Monitor continuously** - Track any deviations from the expected state

Evidence Collection

For PCI DSS audits, you'll need to demonstrate:

  • Current configuration state
  • Historical compliance data
  • Remediation actions taken
  • Continuous monitoring in place

TrueConfig provides all of this evidence through its audit trail and reporting features.

Why This Control Matters for PCI DSS

Attackers commonly set up mail forwarding rules after compromising accounts. These rules silently copy all emails to external addresses, enabling ongoing data theft even after the initial compromise is remediated.

Implementing EXT-07 is an important step toward PCI DSS compliance. Combined with TrueConfig's continuous monitoring, you can demonstrate ongoing adherence to PCI DSS requirements.

Ready to achieve PCI DSS compliance?

TrueConfig continuously monitors your Microsoft 365 tenant for compliance with PCI DSS requirements, including this control.