Definition
DMARC is an email authentication protocol that builds on SPF and DKIM to tell receiving servers how to handle unauthenticated messages and provide reports.
Why it matters for business
Email authentication policy and reporting standard.
Example in an SMB context
Teams in CT, NY, and NJ encounter DMARC when designing backups, email authentication, AI policies, or office networks.
Want this applied to your environment?
Book a free 15-minute review. For a structured risk baseline, use ImpetraInsights™.