Prepare for the NCSC Mail Check changes with Red Sift OnDMARC
Mail Check is discontinuing DMARC aggregate reporting from 24th March 2025. Act now to ensure uninterrupted DMARC compliance and email security.
Prepare for the NCSC Mail Check changes with Red Sift OnDMARC
Mail Check is discontinuing DMARC aggregate reporting from 24th March 2025. Act now to ensure uninterrupted DMARC compliance and email security.
Effortlessly transition your reporting from Mail Check to Red Sift OnDMARC while maintaining seamless email deliverability.
Red Sift OnDMARC goes beyond basic reporting and offers advanced insights into email vulnerabilities and configurations.
UK-based with local data residency, Red Sift provides a trusted DMARC solution for government organisations nationwide.
The changes to Mail Check reduce visibility into email security by removing critical reporting features like DMARC aggregate reporting (RUA), DMARC insights and TLS reporting, leaving organisations more vulnerable to phishing, spoofing, and misconfigurations.
Forensic reporting delivers granular information about emails that failed DMARC authentication on the receiver side while protecting user privacy. In addition, by proactively monitoring DNS (the foundation that DMARC relies on) for forgotten domains and subdomains, we prevent email security attacks that bypass DMARC like SubdoMailing. Red Sift is the only provider on the market that can offer this protection.
OnDMARC’s LLM-powered assistant leverages AI to cut down manual tasks and provide security teams with immediate, actionable insights. Real-time alerts quickly highlight misconfigurations, authentication issues, or unusual activity, allowing your team to respond instantly.
Switching from Mail Check to Red Sift OnDMARC is designed to be seamless. Our Customer Success team will guide you through each step, from initial configuration to ongoing adjustments. This dedicated approach ensures a smooth and efficient adoption of DMARC, SPF, DKIM, BIMI and MTA-STS, without disrupting your email security or deliverability.
Red Sift OnDMARC frees up your team and eliminates manual work by combining deep cybersecurity intelligence with real-time AI analysis—through a single workflow.
DMARC, SPF & MTA-STS policy, policy strength and errors
✅
✅
Inbound TLS & TLS-RPT
✅
✅
DMARC aggregate and forensic reporting
✅
❌
Hosted DMARC, DKIM, SPF, MTA-STS & BIMI
✅
❌
Dynamic SPF
✅
❌
Integrated BIMI with VMC/CMC provisioning
✅
❌
DNS configuration monitoring
✅
❌
Embedded LLM
✅
❌
Industry-leading Customer Success
❌
DMARC, SPF & MTA-STS policy, policy strength and errors
✅
✅
Inbound TLS & TLS-RPT
✅
✅
DMARC aggregate and forensic reporting
✅
❌
Hosted DMARC, DKIM, SPF, MTA-STS & BIMI
✅
❌
Dynamic SPF
✅
❌
Integrated BIMI with VMC/CMC provisioning
✅
❌
DNS configuration monitoring
✅
❌
Embedded LLM
✅
❌
Industry-leading Customer Success
❌
NCSC Mail Check changes FAQ
The NCSC has announced changes to its Mail Check service, effective from 24th of March 2025. While Mail Check will continue to monitor DMARC policy strength, it will no longer provide detailed DMARC reporting and insights crucial for managing email security configurations and addressing vulnerabilities.
Without detailed DMARC reports, your ability to monitor, adjust, and optimise email security configurations will be significantly impacted. This may leave vulnerabilities unaddressed, increasing exposure to phishing, spoofing, and compliance risks. It will also limit your abilities in incident response and threat intelligence (i.e. identifying phishing attempts when they happen). The NCSC recommends that organisations choose an anti-spoofing management tool (like Red Sift OnDMARC) to ensure robust email security management.
With Red Sift OnDMARC, users benefit from a like-for-like alternative to Mail Check that offers equivalent basic reporting capabilities with enhanced enrichment of data. In addition to also offering TLS reporting, Red Sift OnDMARC offers a one-click deployment of emerging requirements such as MTA-STS, to simplify policy hosting and management.
Red Sift is the only UK-headquartered and hosted DMARC vendor on GCloud 14. Red Sift has a proven track record of helping public sector organisations to achieve DMARC compliance. Our platform also integrates additional protocols like MTA-STS which prevents email tampering through man-in-the-middle attacks. Plus, with Ciaran Martin, NCSC Founder and former CEO, on our advisory board, we are uniquely aligned with NCSC guidance.
We are offering an extended free trial for organisations transitioning from Mail Check. This free trial is available until March 2025, ensuring you have ample time to adapt to the changes.
Failing to maintain DMARC compliance can lead to violations of frameworks such as the Cyber Assurance Framework (CAF) and leave domains vulnerable to phishing or spoofing attacks. For organisations in a DMARC “reject” policy, non-compliance may result in disruptions to business operations, including legitimate emails being blocked or misrouted.
Getting started with Red Sift is quick and straightforward. Most organisations can begin collecting data and viewing results in under a day with our expert support.
The 24th of March 2025 deadline is firm. Organisations relying on Mail Check for detailed reporting must transition to an alternative solution by this date to maintain compliance and visibility.
If your organisation is affected by the NCSC’s Mail Check changes, you will qualify for our free trial. Contact us to confirm your eligibility and get started.
See how Red Sift OnDMARC simplifies DMARC compliance
