Email security is undergoing a major shift, and if your business relies on email communication (as most do), it’s time to pay attention. You may start hearing more about DMARC (Domain-based Message Authentication, Reporting, and Conformance) and its impact on email deliverability. Large email providers like Google and Yahoo are now enforcing stricter DMARC policies, requiring organizations to adopt better authentication measures—or risk having their emails rejected outright.

Ignoring these changes could mean disrupted communication with clients, vendors, and partners, increased susceptibility to email fraud, and damage to your business’s reputation. Here’s what you need to know and how to ensure your organization stays protected.

What is DMARC and Why Does It Matter?

DMARC is an email authentication protocol designed to prevent email spoofing and phishing attacks. It works in conjunction with SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to verify that the sender of an email is authorized to use a given domain.

With stricter DMARC enforcement policies now in place, emails that fail authentication may be rejected entirely or flagged as spam—significantly impacting your email communication and business operations.

How to Tell if an Email is DMARC Approved or Rejected

Understanding how DMARC policies impact email security is crucial. When an email is sent, email servers verify whether it passes authentication checks before allowing it into an inbox. If these checks fail, the email is either marked as spam or rejected altogether.

Here’s a quick comparison of what a DMARC-approved email looks like versus one that fails authentication:

DMARC Approved (Passes SPF, DKIM, and DMARC Checks)	DMARC Failed (Rejected or Marked as Spam)
✅ From: support@yourcompany.com	❌ From: support@yourc0mpany.com
✅ Sent via: yourcompany.com	❌ Sent via: unknownserver.com
✅ SPF Alignment: Verified	❌ SPF Alignment: Failed
✅ DKIM Signature: Valid	❌ DKIM Signature: Missing or Mismatched
✅ DMARC Policy: Pass	❌ DMARC Policy: None or Reject
✅ Lands in Inbox	❌ Marked as Spam or Rejected

If your legitimate business emails are being marked as spam or failing to reach recipients, it may be time to review and implement a strong DMARC policy. Without it, your business could face email spoofing risks, phishing attacks impersonating your domain, and a loss of trust from customers.

The Business Risks of Ignoring DMARC Reject Policies

If your company’s domain lacks proper DMARC configurations, you could face:

• Email Deliverability Issues: Emails sent from your domain may not reach clients, partners, or employees if they fail authentication checks.
• Increased Cybersecurity Risks: Attackers frequently use domain spoofing to impersonate businesses in phishing scams. Without DMARC, your domain is vulnerable to misuse.
• Regulatory and Compliance Challenges: Many industries, especially finance and legal sectors, are tightening email security requirements. Non-compliance could lead to fines or reputational damage.
• Customer Trust Erosion: If fraudulent emails appear to come from your domain, your brand’s credibility takes a hit—leading to lost business and damaged relationships.

How Businesses Can Adapt and Secure Their Email Communication

The good news is that Go West IT has a solution. As a Managed IT and cybersecurity provider, we specialize in configuring and enforcing DMARC, SPF, and DKIM policies to secure business email communications. Here’s how we can help:

• DMARC Policy Implementation: We assess your domain and establish an appropriate DMARC policy (Monitor, Quarantine, or Reject) to enhance security without disrupting legitimate emails.
• Email Authentication Configuration: We properly configure SPF and DKIM records to align with your email-sending sources, ensuring all authorized emails pass authentication.
• Ongoing Monitoring & Reporting: DMARC reports provide insights into who is sending emails on your behalf. We analyze these reports to detect unauthorized use and prevent future threats.
• Strategic Rollout to Avoid Business Disruption: Enforcing DMARC too aggressively without monitoring can lead to unintended email rejections. We implement a phased approach, allowing you to monitor and adjust policies before moving to a full reject mode.

Stay Ahead of Email Security Threats

Email remains a primary attack vector for cybercriminals, and with the latest enforcement of DMARC policies by major providers, businesses must take action to protect their domains. Go West IT ensures your email security is up to modern standards—reducing your risk, maintaining email deliverability, and keeping your business communications secure.

Don’t wait until email failures or phishing attacks disrupt your business. Contact Go West IT today to ensure your email domain is secure and compliant with the latest DMARC policies.