Domain-based Message Authentication, Reporting & Conformance explained
DMARC builds on two underlying standards — SPF (which lists the servers allowed to send for your domain) and DKIM (which cryptographically signs your messages). DMARC ties them together: it lets you publish a policy telling receiving mail servers to reject or quarantine any email claiming to be from your domain that fails these checks, and it sends you reports on who is using — and abusing — your domain.
In practice, DMARC closes the gap that allows criminals to send convincing emails that appear to come from your exact domain. With a strong DMARC policy in place, a fraudster can no longer easily impersonate your business in phishing or business email compromise attacks aimed at your staff, customers, or partners.
Why DMARC matters for your business
Email spoofing is at the heart of phishing and BEC. Without DMARC, attackers can forge your domain and send fraudulent messages that look genuinely like they came from you — damaging your reputation and putting customers, suppliers, and employees at risk of being scammed in your name.
DMARC also matters for deliverability: major mailbox providers increasingly require proper email authentication, and domains without it risk having legitimate mail filtered or rejected. Setting up DMARC protects both your brand and your ability to reliably reach inboxes.
Scalogic configures DMARC for your domain
Scalogic sets up and manages DMARC, SPF, and DKIM for your domain as part of our email security service. We configure them carefully to stop spoofing without disrupting your legitimate mail, then move you toward an enforcing policy and monitor the reports for abuse.
Combined with advanced email filtering through our partner Proofpoint, this hardens your domain against impersonation and protects everyone who receives email from you — a key defence against phishing and BEC.
Frequently asked questions
What's the difference between DMARC, SPF, and DKIM?
SPF lists authorized sending servers; DKIM signs messages cryptographically. DMARC ties them together with an enforcement policy and reporting, telling receivers how to handle messages that fail.
Will DMARC affect my legitimate email?
Configured carefully, it shouldn't. Scalogic sets it up in stages, monitoring reports before enforcing, so legitimate mail keeps flowing while spoofing is blocked.
Does DMARC help with deliverability?
Yes. Major providers increasingly require email authentication, so proper DMARC helps your legitimate mail reach inboxes reliably.