Is your email domain protected?
Check your DMARC score in seconds — free. ROI Technologies and Sendmarc protect South African businesses from phishing, spoofing and brand impersonation.
Check Your Email Security Score
Enter your details below to instantly check your domain's DMARC, SPF and DKIM configuration. Free — no commitment required.
Powered by Sendmarc · Your data is handled in accordance with POPIA
Sender Policy Framework — lists which servers can send email from your domain.
DomainKeys Identified Mail — cryptographically signs outbound email to prove it's authentic.
Ties SPF + DKIM together. Tells receiving mail servers what to do with unauthenticated mail.
Without DMARC, anyone can send emails pretending to be you.
Phishing emails impersonating your domain target your clients, suppliers and staff — leading to fraud, data breaches and reputational damage.
End-to-end DMARC implementation with Sendmarc.
Onboard your domains to Sendmarc and start collecting DMARC reports immediately.
Audit and fix every sending source — Microsoft 365, marketing platforms, CRMs, line-of-business apps.
Move you from p=none to p=quarantine to p=reject safely — no legitimate email gets blocked.
Continuous monitoring, threat intelligence, and monthly reporting on attempted abuse.
Stop email impersonation with Sendmarc-powered DMARC, SPF and DKIM enforcement.
DMARC implementation and email security for South African businesses — powered by Sendmarc. SPF, DKIM and DMARC enforcement from setup to full p=reject.
Email authentication is not a single setting. SPF tells receiving servers which systems may send on your behalf, DKIM signs each message so it can be verified, and DMARC ties the two together and tells the world what to do with mail that fails. Getting all three aligned across Microsoft 365, your CRM, your marketing platform and every line-of-business app is the work — and it is the work we do for South African businesses, from first report to full p=reject enforcement.
Trusted by South African businesses
"Francois Van Dyke-Geyser and the team at ROI Technologies have provided exceptional IT support for my business. They have consistently ensured that our IT infrastructure remains secure, reliable, and running smoothly, giving me complete peace of mind. What truly impressed me was when they resolved a complex DMARC issue in less than 10 minutes — something my previous IT provider had been unable to fix correctly. Their technical expertise, responsiveness, and problem-solving ability are outstanding. Beyond their technical skills, ROI Technologies operates with strong core values, professionalism, and integrity. I trust Francois and his team completely with my IT needs and would highly recommend them to any business looking for a dependable and knowledgeable IT partner."
"As a specialist dental practice we partnered with ROI Technologies for full IT support. We have been working together for years — exceptional service."
"Great company with excellent service and a friendly team. Decide is especially reliable, easy to work, and quick to resolve issues."
"Tatenda and ROI team provides outstanding IT support and is an essential contributor to our workplace productivity."
"Great professional service from Lami and Zain..keep it up"
DMARC & Email Security Questions
Get DMARC implemented for your business.
ROI Technologies + Sendmarc — protect your domain, your clients and your reputation. Free DMARC consultation for South African businesses.
Contact ROI Technologies