Layer7 Networks × Sendmarc

Automated DMARC enforcement — protecting your domain from impersonation and your people from phishing.

About Sendmarc

Sendmarc is a South African-founded email authentication platform that automates the implementation and enforcement of DMARC, SPF, and DKIM across organisational email domains. Their platform takes organisations from zero email authentication to full DMARC enforcement (p=reject) — the only policy that actually prevents domain spoofing — with guided workflows, automated DNS configuration, and continuous monitoring.

Email impersonation remains one of the most effective attack vectors globally. Threat actors routinely spoof legitimate business domains to deliver phishing payloads, conduct business email compromise (BEC), and defraud customers and partners. DMARC enforcement is the definitive technical control that prevents this — yet global adoption at enforcement level remains below 30%. Sendmarc exists to close this gap through automation and managed implementation.

The Sendmarc platform provides domain discovery (finding all domains an organisation owns), SPF flattening (solving the 10-lookup limit), DKIM key management, aggregate and forensic DMARC report analysis, and a guided enforcement journey that identifies legitimate sending sources before tightening policy. Their managed approach ensures organisations don’t accidentally block their own legitimate email while moving to enforcement.

Why Layer7 Chose Sendmarc

Layer7 partners with Sendmarc because email domain protection is a critical — and frequently neglected — component of an organisation’s security posture. We’ve seen clients suffer reputational damage, financial loss, and customer trust erosion from domain spoofing attacks that DMARC enforcement would have prevented entirely. Sendmarc makes this protection achievable without requiring deep DNS and email infrastructure expertise from the client.

Sendmarc’s South African origin is relevant. They understand the local threat landscape, regulatory environment (POPIA), and the email ecosystems common in South African enterprises. Their support operates in our timezone, their platform accounts for local ISP and email provider nuances, and their team speaks our clients’ language — literally and technically.

The automation matters. Manual DMARC implementation is slow, error-prone, and frequently stalls at monitoring policy (p=none) because teams fear blocking legitimate email. Sendmarc’s guided enforcement workflow identifies every legitimate sending source, validates their authentication, and provides confidence to move to reject policy. Layer7 leverages this to deliver DMARC enforcement in weeks, not the months that manual approaches typically require.

How Layer7 Delivers Sendmarc

• Domain Discovery and Assessment: Layer7 conducts a full audit of your email domain landscape — identifying all domains, subdomains, and third-party sending sources that require DMARC protection.

• Sendmarc Platform Onboarding: Deployment of Sendmarc across all organisational domains, including DNS record configuration, reporting enablement, and legitimate sender identification.

• SPF and DKIM Remediation: Resolution of SPF record issues (exceeding lookup limits, missing includes) and DKIM deployment for all sending sources — marketing platforms, CRM systems, ticketing tools, and transactional email services.

• Guided Enforcement Journey: Layer7 manages the progression from p=none (monitoring) through p=quarantine to p=reject (full enforcement), validating legitimate email flow at each stage.

• Ongoing Monitoring and Maintenance: Continuous monitoring of DMARC reports for new sending sources, authentication failures, and spoofing attempts, with proactive remediation of issues.

• Brand Protection Reporting: Regular reports on impersonation attempts against your domains, geographic origin of spoofing, and the volume of fraudulent email blocked by your enforcement policy.