Sendmarc DMARC Enterprise Service is a managed email authentication platform that implements and enforces DMARC (Domain-based Message Authentication, Reporting, and Conformance) policies across enterprise domain portfolios. The service builds on SPF and DKIM protocols to protect domains from phishing, spoofing, and Business Email Compromise (BEC). It publishes DMARC policies in DNS, checks alignment between the "From" domain and SPF/DKIM-authenticated domains, and delivers aggregate and failure reports on unauthorized domain usage. Key operational capabilities include: - Centralized dashboard providing unified visibility across multiple domains and third-party senders - Automated SPF flattening to manage the 10 DNS lookup limit - Role-based access controls for global and regional team structures - Scheduled and audit-friendly compliance reporting - Real-time alerts on suspicious activity and unauthorized senders - SSO and API integrations for security stack connectivity - Managed implementation and ongoing monitoring by Sendmarc experts The platform supports a phased DMARC rollout strategy, including mapping third-party senders, prioritizing high-risk domains, and progressing toward full policy enforcement. It also surfaces shadow IT by identifying unsanctioned email senders. Complementary add-on services include Lookalike Domain Defense (monitoring of domains resembling the customer's own) and Breach Detection (monitoring of dark web and other sources for compromised credentials or systems).