DMARC / SPF / DKIM Protection

Stop email fraud before it reaches your customers

Cybercriminals impersonate your domain to defraud staff, clients and partners. Our DMARC service, powered by Sendmarc, shuts down spoofing — and keeps you compliant with UK, EU and global mandates.

How secure is your domain?

Enter your business email and we'll assess your current DMARC posture.

94% of phishing attacks exploit unprotected domains

3.4B spoofed emails sent every single day

✓Sendmarc Elite Partner✓24/7 Domain Monitoring✓Full Managed Service✓GDPR Compliant

The Email Authentication Stack

What is DMARC — and why does it matter?

Email authentication is a three-layer defence. Without all three, your domain is open to spoofing. DMARC is the policy layer that ties everything together and tells receiving servers what to do with fraudulent mail.

SPF — Sender Policy Framework

Specifies which mail servers are authorised to send email on behalf of your domain. Acts as a whitelist in your DNS — any server not listed fails SPF and stops simple domain forgery.

DKIM — DomainKeys Identified Mail

Adds a cryptographic digital signature to every outgoing email. The receiving server verifies this against a public key in your DNS, proving the message hasn't been tampered with in transit.

DMARC — Domain-based Message Authentication

Uses SPF and DKIM results to enforce a policy: none (monitor), quarantine (spam), or reject (block). Sends forensic reports back to you showing every attempted misuse.

Email SentOutbound→SPF CheckServer Auth→DKIM CheckSig Valid→DMARC PolicyEnforced → Result✓ Delivered

Global Compliance Landscape

Where is DMARC mandated?

Whether you operate in the UK, Ireland, the EU or further afield, the requirement to implement robust email authentication is accelerating across jurisdictions.

Strictly Mandated Legal or Regulatory Requirement

🇬🇧

United Kingdom

All government departments and NHS bodies must implement SPF, DKIM & DMARC at enforcement policy, plus TLS encryption. Applies across the entire public sector.

🇳🇱

Netherlands

Government organisations must implement SPF, DKIM & DMARC under "comply or explain" standards — one of the strictest frameworks in Europe.

🇸🇦

Saudi Arabia

National Essential Cybersecurity Controls require all government and critical national bodies to implement SPF, DKIM & DMARC as mandatory email threat mitigation controls.

Standard / Recommended Moving Towards Mandate

🇮🇪

Ireland

The Public Sector Baseline Standard requires enforcement of SPF, DKIM and inbound DMARC. Currently a formal standard rather than a strict legal mandate — but compliance is expected.

🇪🇺

EU Member States (NIS2)

NIS2 mandates appropriate technical measures for email security. Most member states are pushing public bodies toward DMARC. EU-wide enforcement expected by 2027.

🇦🇺

Australia

The ACSC strongly recommends SPF, DKIM & DMARC for all public sector organisations. Guidance rather than a legally enforced mandate at present.

🇮🇳

India

CERT-IN guidelines encourage email authentication. Not yet mandated by law, but requirements are evolving rapidly.

⚠️ Requirements are moving fast. Even where DMARC is currently a recommendation, regulators are tightening timelines. Organisations in Ireland and across the EU should treat full DMARC enforcement as an imminent obligation — not a future consideration. Getting compliant now avoids rushed, error-prone implementations later.

Inbox Delivery Requirements

Major providers now require DMARC

Google, Yahoo and Microsoft have all updated their sender requirements. Without proper DMARC implementation, your legitimate emails risk being rejected or quarantined.

Gmail

— All senders, all volumes

✓SPF record correctly configured
✓DKIM signing enabled
✓DMARC policy of p=none or stronger
✓One-click unsubscribe for marketing email
✓Spam rate maintained below 0.3%

Yahoo / AOL

— All senders, all volumes

✓SPF record correctly configured
✓DKIM signing enabled
✓DMARC policy in place
✓One-click unsubscribe for bulk senders
✓Spam rate maintained below threshold

Microsoft

— Senders >5,000 emails/day

✓SPF record correctly configured
✓DKIM signing enabled
✓DMARC policy of p=none or stronger
✓DMARC alignment enforced
✓Valid reply-to addresses required
✓Unsubscribe mechanism in place

Our Managed DMARC Service

Everything managed, end-to-end

As a Sendmarc Elite Partner, we manage the entire process from your current DNS posture through to full enforcement, with ongoing monitoring and reporting throughout.

Domain Security Audit

We audit your existing SPF, DKIM and DMARC configuration, identify gaps and misconfigurations, and produce a clear report on your current risk exposure.

Policy Configuration

We configure your DNS records correctly and guide you from p=none (monitor) to p=reject (full enforcement) without disrupting your legitimate email flow.

Ongoing Monitoring & Reports

Continuous monitoring with clear, actionable dashboards — not raw XML — showing who is sending as your domain and flagging any attempted misuse.

Breach & Threat Detection

Our breach detection service monitors the dark web and threat intelligence feeds for signs your domain or credentials are being exploited or circulated.

Compliance Assurance

We map your DMARC posture to UK NCSC, Ireland's Baseline Standard, NIS2 and all major inbox provider mandates — keeping you ahead of every requirement.

Dedicated Expert Support

A named expert from our Ireland and UK team handles your account. No call centres — direct access to cybersecurity professionals who understand your business.

Getting Started

From zero to full enforcement in four steps

Most organisations reach full DMARC enforcement within 60–90 days. Here is how our managed process works.

01

Audit & Discovery

We assess your DNS records, email sending sources and identify every service sending as your domain.

02

Baseline & Monitor

We set DMARC to p=none and collect forensic reports — you see the full picture including unauthorised senders.

03

Authorise & Align

We work through your legitimate sending sources — CRM, marketing, HR platforms — ensuring each passes SPF and DKIM.

04

Enforce & Protect

Once all legitimate traffic passes, we move to p=reject. Spoofed emails are blocked. Your brand is protected.

Find out how exposed your domain really is

Enter your business email and we’ll run a free DMARC health check — showing exactly how your domain could be exploited right now.

or email info@besecureonline.co.uk