Your Domain Is Talking – Is It Telling the Truth?
Misconfigured email authentication is one of the most common – and most visible – security gaps we find. Attackers exploit it to spoof your domain. Email providers use it to decide whether your messages reach the inbox.
The Problem Hiding in Your DNS
Email is the front door of every organization. It is also the easiest channel to abuse. If your domain does not enforce SPF, DKIM, and DMARC, anyone on the internet can send mail that looks like it came from you. Your customers see your brand. Your employees see a familiar sender. The attacker gets a clean delivery into someone’s inbox.
The damage is rarely contained to a single phishing email. Spoofing campaigns target your suppliers, your clients, your finance team, and your own staff – using the trust your brand has built to bypass instinctive caution. Once a payment is redirected or credentials are harvested, the cost is real and the trail is hard to follow.
Even when attackers leave you alone, weak authentication still costs you money. Google, Yahoo, and Microsoft now use authentication signals to decide which messages reach the inbox. Missing or misconfigured records mean legitimate mail lands in spam or is silently rejected – and the sales conversations, support replies, and outreach you depend on quietly disappear.
The compliance picture has shifted too. Cyber insurance questionnaires routinely ask about DMARC enforcement. Frameworks like NIST, CIS, and CMMC increasingly call it out as a baseline control. A “p=none” record will not pass an attentive auditor.
Most organizations do not know any of this is broken until something goes wrong. The records are invisible to everyone except the people checking them – and the attackers who already have.
What We Do
Email authentication is straightforward in theory and messy in practice. Patchly takes ownership of the assessment, the remediation, and the ongoing visibility – so you go from broken to enforced without the trial and error.
Assess
We audit your domain and all subdomains for SPF, DKIM, DMARC, BIMI, MTA-STS, and TLS reporting configuration. We identify gaps, misconfigurations, overly permissive policies, and SPF records approaching the 10-lookup limit. You get a clear picture of where you stand and what to fix first.
Remediate
We configure or correct your email authentication records. For DMARC, we implement a progressive enforcement path: monitoring (p=none), then quarantine, then reject. We work with your Microsoft 365 or Google Workspace environment to ensure DKIM signing is active across every legitimate sending source. We harden transport security with MTA-STS and TLS reporting so inbound mail is delivered over encrypted, monitored connections.
Monitor
We analyze DMARC aggregate and forensic reports to identify unauthorized senders, track enforcement impact, and catch configuration drift. You get clear visibility into who is sending email as your domain – and the confidence that nothing slipped while you were busy.
Why Now
Google and Yahoo’s 2024 bulk sender requirements made DMARC mandatory for any organization sending meaningful volumes of email. Microsoft announced similar enforcement for Outlook.com in 2025. The industry is moving steadily toward reject-by-default, and the operators who waited are now scrambling.
Email authentication is one of the very first things visible on any domain’s attack surface. A simple DNS lookup reveals your posture to anyone who looks – and that includes underwriters reviewing your insurance application, regulators checking your controls, attackers selecting their next target, and customers running their own due diligence.
Fixing it is not a quarterly project. It is a focused engagement that pays back almost immediately in deliverability and brand protection.
Part of a Bigger Picture
Email authentication is one of the first things we check as part of attack surface management. It is a quick win that reduces phishing risk, improves deliverability, and demonstrates security maturity – often within days, not months. The same engagement also surfaces unknown subdomains, expiring certificates, and other DNS-level exposures that attackers find first.
Check Your Domain
Run a quick assessment of any domain’s email authentication. We will tell you the headline result – not the raw DNS records – so you can see at a glance whether the basics are in place.
Enter any domain to see how its email authentication is configured. We check SPF, DKIM, DMARC, BIMI, MTA-STS, and more – the records that protect your domain from spoofing and improve email deliverability.
Overall posture for
Email Authentication
Transport Security MX, MTA-STS, TLS-RPT, DNSSEC – how mail is routed and protected in transit
Want us to fix this?
Book a CallLock Down Your Domain
Talk to our team about getting SPF, DKIM, and DMARC enforced across your organization – usually in days, not months.