DMARC management platform
Sendmarc’s DMARC platform assists in the implementation and management process from beginning to end. It also provides continuous monitoring to ensure the strongest DMARC compliance for your domain at all times.
Our purpose-built platform’s features include comprehensive DMARC reporting and analytics, email authentication, configuration and hosting, real-time threat intelligence, and so much more.
Implementing DMARC using our platform also enables your business’s compliance with industry regulations such as Google and Yahoo sender rules, PCI DSS, NIST, and CCPA, to name a few.
Supercharged email security:
Sendmarc's DMARC platform features
The sooner your business knows about compromised data, the faster it can mitigate the risk and prevent business damage. Sendmarc Breach Detection monitors multiple sources, including the dark web to expose any information stolen or leaked from your business or its third parties including:
Consolidated DMARC reporting & analytics
- Full visibility of email traffic
- Aggregate (RUA), forensic (RUF), MTA-STS and TLS report data consolidation and enrichment
- Actionable insights based on report findings
- Historical data and trends
- Identification of senders using your domain & who their service providers are
- Sender location mapping
- Automatic interrogation of email source reputations
- Visibility into blacklisted IP addresses and frequency
All the above information empowers faster threat discovery and resolution. Get a better understanding of DMARC reporting in our blog.
DMARC policy management
Configure and enforce DMARC, SPF, DKIM, BIMI, and MTA-STS effortlessly.
- DMARC record management: Create, manage, and enforce DMARC settings with accuracy.
- SPF management & optimization: Automate SPF record management and flattening.
- DKIM key hosting & rotation: Strengthen key management for enhanced authentication.
- BIMI implementation: Enable brand authentication for visual trust in inboxes.
- MTA-STS & TLS-RPT: Enhance TLS with reporting & enforcement.
- Email regulation compliance: Boost compliance with global email security standards.
Our comprehensive platform allows seamless management of all policy configurations, enabling effortless email authentication.
SPF optimization
Overcome SPF’s DNS lookup limit with our advanced SPF flattening feature. Automatically optimize your SPF records to include all authorized IP addresses directly, preventing too many lookup errors.
Real-time threat intelligence
Set up your chosen alerts and receive an email to the specified email address when an event takes place, enabling faster threat response.
Email branding with BIMI
Once your domain is DMARC compliant, you can implement our hosted BIMI feature. BIMI enables the display of your logo beside emails in supported inboxes, maximizing email impact, brand recognition and trust.
User security & access management
Two-factor
authentication (2FA)
User access and
audit logs
User role
management
API-first
platform
What is DMARC (Domain-based Message Authentication, Reporting, and Conformance)?
Domain-based Message Authentication, Reporting, and Conformance (DMARC) is an email authentication protocol that builds on Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) to help secure your organization’s domain and stop cybercriminals from using it in email impersonation and spoofing attacks.
DMARC provides three core benefits:
- DMARC protects your business’s domain by blocking fraudulent emails and safeguarding customers, suppliers, employees, and external recipients
- DMARC improves email delivery and inbox placement for authenticated email sources like your company’s CRM, ERP, marketing tools, and primary email services
- DMARC provides visibility into all emails sent on behalf of your organization’s domain, both legitimate and malicious
If your business sets up a DMARC record in its DNS, it can monitor services sending email from its domain and enforce policies that prevent spoofing and impersonation.
Sendmarc’s DMARC management platform provides everything your company needs to manage DMARC, SPF, DKIM, Mail Transfer Agent Strict Transport Security (MTA-STS), and Brand Indicators for Message Identification (BIMI), supported by Sendmarc’s award-winning DMARC implementation services.
Why is DMARC important for email security?
Email communication wasn’t originally created with identity verification in mind. This means cybercriminals can send emails from your organization’s domain and target customers, employees, or suppliers.
Email impersonation and spoofing attacks often lead to:
- Invoice fraud and deposit scams
- Man-in-the-Middle (MitM) attacks
- Phishing attempts
Traditional email security tools primarily protect internal users. This leaves external recipients, such as customers and suppliers, vulnerable to spoofed emails.
DMARC offers the following benefits:
- Stops domain impersonation by blocking spoofed emails from your business’s domain before they reach inboxes
- Improves inbox placement for legitimate and authenticated emails
- Provides detailed reports on all services sending email on behalf of your company’s domain, both legitimate and malicious
How does DMARC work?
DMARC uses SPF and DKIM results to check if a message should be trusted.
Here’s how it works:
- An email is received
- The receiving server verifies whether the message passes SPF or DKIM checks, and if those align with the ‘From’ domain
- Based on the DMARC policy (p=none, p=quarantine, or p=reject), the server decides how to handle unauthenticated messages
- Your organization receives DMARC reports to track activity and adjust enforcement
DMARC record example
Basic DMARC record:
| Host | Type | Value |
|---|---|---|
| _dmarc.yourdomain.com | TXT | v=DMARC1; p=reject; rua=mailto:[email protected]; fo=1; |
This record tells email providers to reject unauthenticated messages and send aggregate reports to [email protected].
Advanced DMARC record:
| Host | Type | Value |
|---|---|---|
| _dmarc.yourdomain.com | TXT | v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; aspf=s; adkim=s; fo=1; |
Sendmarc offers advanced DMARC configuration tools and a DMARC record generator, which make it easy to create and manage these records.
How to create a DMARC record
Step 1: Define the DMARC Policy:
Decide how unauthenticated messages should be handled:
- p=none: Monitor only
- p=quarantine: Send to Spam
- p=reject: Block unauthenticated messages
It is best to start with p=none to collect data before moving toward stricter enforcement.
Step 2: Add an RUA reporting address
Choose an inbox to receive aggregate DMARC reports, for example, rua=mailto:[email protected].
Make sure this inbox can process XML-formatted data. For proper alignment, the domain of the reporting address should match your company’s sending domain.
Step 3: Publish the DMARC DNS record
Host | Type | Value |
| _dmarc.yourdomain.com | TXT | v=DMARC1; p=none; rua=mailto:[email protected]; |
Use Sendmarc’s DMARC policy manager to generate, validate, and publish your organization’s record correctly.
Step 4: Monitor & analyze DMARC reports
Your business will start receiving DMARC reports within 24 to 48 hours. These XML-based reports can be difficult to read manually. Our DMARC analyzer automatically processes DMARC data, providing clear, actionable insights to help your company identify unauthorized senders, monitor compliance, and move toward full protection.
Benefits of DMARC
Implementing DMARC can significantly improve the security, deliverability, and visibility of your organization’s email.
Key benefits include:
- Prevents spoofing and phishing attacks by blocking unauthorized senders from using your business’s domain
- Improves inbox placement and strengthens the sender reputation of your company’s legitimate email services
- Builds customer trust by verifying your organization’s email identity and ensuring authenticity
- Provides full visibility into all sources that are sending emails on behalf of your business’s domain, both legitimate and malicious
- Reduces the risk of your company’s domain being blacklisted or flagged as Spam
With DMARC in place, your organization’s email becomes a trusted source, strengthening brand reputation and minimizing email-based threats.
Common DMARC mistakes & misconfigurations
The most critical DMARC mistake is moving to a p=reject policy too quickly without analyzing your business’s DMARC reports. If a legitimate email service doesn’t have properly aligned SPF or DKIM records, those messages will fail authentication checks. As a result, legitimate emails may be rejected by receiving servers, which can negatively impact operations and email deliverability.
Other common DMARC misconfigurations include:
- Missing RUA address for DMARC reports
- Publishing multiple DMARC records (only one is allowed per domain)
- Multiple SPF records instead of a single merged one
- Misconfigured percentage (pct) value, leading to unexpected policy application
- Overlooking subdomain reporting and configuration
If your company needs help with DMARC implementation or configuration, Sendmarc’s award-winning support team is here to assist. Our DMARC management platform ensures safe and correct configuration from the start.
DMARC, SPF, & DKIM:
What do they mean?
Protocol |
Purpose |
Configuration |
| SPF | Authorizes sending IPs | DNS TXT record |
| DKIM | Digitally signs messages | Email headers & DNS TXT record |
| DMARC | Enforces policy and reports | DNS TXT record |
DMARC FAQs
What is a DMARC record?
A DMARC record is a DNS TXT entry that tells receiving servers how to handle unauthenticated messages and where to send reports.
Do I need DMARC if I already have SPF or DKIM?
Yes. DMARC aligns SPF and DKIM with the domain in the ‘From’ header and adds policy enforcement and reporting capabilities.
Can I publish more than one DMARC record?
No, only one DMARC record is allowed per domain. But subdomains can have their own DMARC records, which might be different from the policy set on the root domain.
What does it mean if DMARC fails?
A DMARC fail means the message failed both SPF and DKIM alignment checks and didn’t comply with the domain’s DMARC policy.
How can I validate my DMARC record?
Use Sendmarc’s DMARC checker to test and validate your company’s setup.
What if my DMARC policy is incorrect?
Incorrect DMARC policies can block valid messages or may fail to prevent spoofing. Start with a p=none policy, then progress to p=quarantine or p=reject.
Does DMARC prevent all phishing?
DMARC significantly reduces domain spoofing but should be part of a wider security strategy that includes user training.
Interested in adopting DMARC at your organization?
Check out how Sendmarc simplifies the implementation and management of DMARC.
Integrates with existing services and applications
Our DMARC platform works alongside all email vendors, security services and applications for seamless implementation and uninterrupted business operations.
Evaluate your domain safety in one click
Sendmarc’s unique algorithm rates your domain’s exposure to fraudulent email activities with a single click.
What our customers have to say
Passionate & great team to work with
“They live and breathe their mission to make the internet safer. Simple and feature-rich solution that’s easily understandable.”
Shailendra Harri
Business Development Manager at CHM Vuwani
Phenomenal product & team
“Sendmarc offers very powerful and simple solutions to very real problems our customers face. Their technology is excellent and their team is among the best in the industry.”
Brian Timperley
Co-Founder and CEO at Turrito Networks
Simple, specific & reliable security for email
“I love using Sendmarc because the interface is easy to use and intuitive and the support is excellent. My channel manager has kept me updated on new developments as well as where to find the current training. This solution reminds you that you’re secure with a monthly domain security certificate.”
Derek Middleton
Systems Engineer at the Way Forward IT
World-class technology, even better team
“Sendmarc solves a real business problem and is an easy sale. They’re passionate about their mission to make the internet a safer place. The platform’s easy to use, and implementation is simple. The team manages the entire solution to ensure 100% success and has a 90-day guarantee to get your domain to 5 out of 5.”
Brian Tarr
CEO at Data Eco
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Implementation
Solutions
We guarantee to take your domain to a reject
policy within a maximum of 90 days. See how
our leading DMARC solution benefits your
industry and role.
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breached systems.
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