DMARC Sender Verification Service
Watch our 2-minute explainer to understand exactly how cybercriminals impersonate your domain — and how BeSecureOnline, partnering with Sendmarc, shuts it down permanently.
Enter your business email and we'll assess your current DMARC posture.
2-Minute Explainer
This short video explains exactly what domain spoofing is, why it’s so dangerous, and how the DMARC, SPF and DKIM stack — implemented and managed by BeSecureOnline through Sendmarc — closes the door on it for good.
Why It Matters
Rated the #1 anti-domain-hijacking solution. BeSecureOnline and Sendmarc give your organisation complete visibility and control over who is sending email as your domain.
Once DMARC is enforced at p=reject, no unauthorised sender can successfully deliver email pretending to be your domain. Full stop.
Sendmarc's dashboard gives you full visibility of every mail source — legitimate and illegitimate — before you lock down policy. Nothing gets missed.
Protect your brand, clients and staff. When fraudsters can't impersonate your domain, phishing attacks built on your name collapse before they start.
Trusted By
From credit unions and healthcare bodies to national food brands — organisations across Ireland and the UK rely on us to secure their email domains.
Client Testimonials
Real results from real organisations who have secured their email with BeSecureOnline and Sendmarc.
“With the Central Bank breathing down our necks about cyber security we needed to ensure our email communications with our members were 100% secure. Moving to Sendmarc to lock this down became a need to have rather than a nice to have. With a fully supported, managed integration we now feel confident any email reaching our members remains genuine.”
“We needed 100% email security for cyber insurance, NIS2 and ISO27001 purposes. Delighted to recommend BeSecureOnline and Sendmarc for DMARC security. Installation was painless — and helped us to secure premium cyber insurance renewal premium reductions.”
“People don't usually think about email security until something goes wrong. Sendmarc works quietly in the background and does exactly what it's supposed to.”
Getting Protected
Most organisations reach full DMARC enforcement within 60–90 days. Our fully managed process means you don’t need to be a technical expert.
We assess your DNS records and identify every service sending email as your domain.
DMARC set to p=none — you see the full picture of legitimate and illegitimate senders.
We ensure every legitimate sending source — CRM, marketing, HR — passes SPF and DKIM.
We move to p=reject. Spoofed emails are blocked. Your brand and clients are protected.
Enter your business email and we’ll run a free DMARC health check — showing exactly how your domain could be exploited right now.