Guide

See exactly who's sending
as your domain — and why it matters

DMARC reports arrive in your inbox every day and sit unread. TrustedMARC turns them into a clear picture of your email security — who's sending legitimately, what's failing, and whether anyone is trying to impersonate you.

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Someone could be impersonating you right now

Without analysing your DMARC reports, you have no visibility into whether external IPs are sending emails claiming to be from your domain. Attackers use this to target your customers, partners, and staff.

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Tightening security can break legitimate mail

Moving to a strict DMARC policy (p=reject) without first understanding all your legitimate senders will cause real emails to be blocked. TrustedMARC shows you exactly what you'd be affecting before you make the change.

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Shadow IT sends email you don't know about

Marketing tools, CRMs, automation platforms — services set up by teams without IT's knowledge often send as your domain. They show up in your DMARC reports as unrecognised senders that need configuring or blocking.

Confidence to enforce — not just monitor

Most organisations sit on p=none (monitoring only) for months or years because they're not sure what they'd break. One report from TrustedMARC gives you the clarity to act.

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Your DMARC Journey — step by step
From saving your report files to understanding your results and acting on the findings. Eight clear steps with tips, warnings, and plain-English guidance throughout.
Start the journey →
The four things that show up in almost every report
Common

Legitimate senders with misconfigured authentication

A marketing platform, CRM, or transactional email service that is sending as your domain but has not had DKIM signing properly configured. Messages arrive fine but fail DMARC alignment. Easy to fix once you know it's happening.

Watch

Shadow IT — services you didn't know about

A tool set up by the marketing or sales team without IT involvement, sending newsletters or automated emails from your domain. Shows up as an unfamiliar sender with moderate volume. Needs a conversation, not necessarily a block.

Investigate

Unknown IPs with total DMARC failure

An IP address you don't recognise, sending messages claiming to be from your domain, with every single message failing authentication. This is the clearest indicator of spoofing or phishing activity targeting your brand.

Reassuring

Confirmation that your main mail flow is clean

Your primary email provider — Google Workspace, Microsoft 365, or similar — showing a high pass rate across a large message volume. Confirmation that your core mail infrastructure is properly configured and safe to enforce.

Ready to see what's sending as your domain?

TrustedMARC is available now as a desktop application for macOS and Windows. One-time purchase, no subscription.