EMAIL SECURITY • DMARC • SPF • DKIM
Protect Your Domain From Email Spoofing & Impersonation
Protect your business against domain impersonation, phishing and email spoofing with professionally managed DMARC, SPF and DKIM.
WHAT IS DMARC?
Email Authentication That Protects Your Domain
DMARC — Domain-based Message Authentication, Reporting & Conformance — helps protect your domain from unauthorised email use. It works alongside SPF and DKIM to verify whether messages claiming to come from your domain are legitimate.
SPF
Authorised Senders
DKIM
Message Integrity
DMARC
Policy & Protection
BUSINESS PROTECTION
WHY DMARC MATTERS
Protect More than just your inbox
Prevent Domain Impersonation
Stop unauthorised senders using your domain.
Reduce Phishing & Spoofing
Strengthen your protection against fraudulent email.
Protect Brand Reputation
Safeguard customer trust in your brand.
Improve Email Trust
Help legitimate email get recognised.
EMAIL SECURITY RISKS
Common Email Security Problems We Find
Is Your Domain Really Protected?
Having SPF, DKIM or DMARC records doesn't necessarily mean your domain is fully protected. Incorrect configurations, weak policies and authentication problems can still leave gaps in your email security.
Here are some of the common issues we identify when assessing business domains.
DMARC Record Missing
Without a DMARC record, your organisation has less control over how receiving mail systems handle messages that claim to come from your domain.
HIGH PRIORITY
DMARC Monitoring Only
A p=none policy provides valuable visibility and reporting, but it does not instruct receiving systems to quarantine or reject messages that fail DMARC.
MONITORING
SPF Configuration Issues
Incorrect SPF records, unauthorised sending sources or excessive DNS lookups can cause authentication problems for legitimate business email.
AUTHENTICATION
DKIM Not Configured
Without DKIM signing, receiving mail systems lose an important method of verifying the authenticity and integrity of messages sent from your domain.
EMAIL INTEGRITY
DMARC Alignment Problems
SPF or DKIM may pass authentication while still failing DMARC if the authenticated domain does not properly align with the domain shown in the From address.
CONFIGURATION
Unprotected Subdomains
Subdomains should also be considered as part of your email-security strategy. An incomplete DMARC configuration can leave areas of your domain infrastructure without the protection you intended.
DOMAIN SECURITY
Not Sure What Your Domain Is Missing?
Email authentication can become complicated when multiple platforms, cloud services and third-party systems send email on behalf of your business.
MANAGED DMARC IMPLEMENTATION
We Simplify Your DMARC Journey
DMARC implementation isn't simply about adding a DNS record. We help identify your legitimate email sources, configure authentication correctly, monitor activity and safely progress your domain towards stronger protection.
From initial assessment to ongoing monitoring, we handle the technical complexity for you.
Discover
Identify the platforms, applications and services currently sending email using your domain.
EMAIL SOURCE DISCOVERY
01
Authenticate
Configure and optimise SPF and DKIM so legitimate email services can authenticate correctly.
SPF + DKIM
02
Monitor
Analyse DMARC reporting to identify legitimate senders, authentication problems and suspicious activity.
VISIBILITY & REPORTING
03
Protect
Progress towards stronger DMARC enforcement once legitimate sending sources have been identified and authenticated.
DMARC ENFORCEMENT
04
Maintain
Continue monitoring your domain as email platforms, suppliers and business systems change over time.
ONGOING PROTECTION
05
From Visibility to Protection — Without Disrupting Legitimate Email
Moving too quickly to DMARC enforcement can affect legitimate email if authorised sending services haven't been identified first. Our managed approach focuses on understanding your email environment before progressing towards stronger protection.
FOUND SECURITY GAPS?
Low DMARC, DKIM or SPF Score?
Let’s Fix It.
Identifying an email security problem is only the first step. Incorrect SPF, DKIM or DMARC configurations can affect both your domain security and legitimate email delivery.
RC IT Services can help identify the cause, correct authentication issues and strengthen your domain without unnecessarily disrupting legitimate email services.
GET HELP WITH MY DOMAIN →WE CAN HELP CORRECT
Your Email Authentication & Domain Security
- SPF Configuration
- DKIM Authentication
- DMARC Policy
- MTA-STS
- TLS Reporting
- DNSSEC
From assessment and configuration to ongoing monitoring and protection
WHY MANAGED DMARC?
More Than a DNS Record.
Ongoing Protection for Your Domain.
Effective DMARC protection requires more than publishing a policy. Email environments change as businesses add new platforms, suppliers and services — which is why ongoing visibility and management matter.
Managed Protection
We help configure, manage and strengthen your domain's email authentication while reducing the risk of spoofing and impersonation.
DOMAIN PROTECTION
Continuous Visibility
Gain visibility into the services sending email on behalf of your domain and identify authentication issues or suspicious activity.
ONGOING MONITORING
Better Email Deliverability
Correct authentication helps legitimate emails prove they're genuine, supporting stronger inbox placement and sender trust.
TRUSTED EMAIL
Expert Management
We handle the technical complexity of authentication, monitoring and policy progression so your team doesn't have to.
MANAGED SERVICE
READY TO PROTECT YOUR DOMAIN?
Stop Domain Spoofing Before It Starts.
Strengthen your email security and take control of who can legitimately send email using your domain.
We'll help you assess your current configuration, identify authentication gaps and implement a managed approach to stronger domain protection.