Email Security Configuration Analysis

SSL Certificate Analysis Open Port Detection Web Application Scanning DNS Security Audit HTTP Header Analysis Misconfiguration Detection Software Fingerprinting Subdomain Enumeration
SSL Certificate Analysis Open Port Detection Web Application Scanning DNS Security Audit HTTP Header Analysis Misconfiguration Detection Software Fingerprinting Subdomain Enumeration

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What would this find on your domain?

Enter your domain and see what a first look turns up, in plain language and with the fixes alongside.

Email remains one of the most targeted communication channels for cybercriminals. Attackers routinely impersonate trusted domains to trick employees, customers, and partners into handing over credentials, approving fraudulent payments, or downloading malware. Sensagraph's Email Security Configuration Analysis inspects every layer of your domain's email authentication setup to make sure your brand cannot be easily abused.

By validating your SPF, DKIM, DMARC, MX, and related DNS records, Sensagraph identifies gaps that leave your organization exposed to spoofing, phishing, and business email compromise. The results are presented in clear, actionable terms so that both business owners and technical teams know exactly what to fix and why it matters.

Complete visibility into your email authentication posture

Sensagraph examines the DNS records that determine whether emails claiming to come from your domain can be trusted. Each record is validated for correctness, strength, and alignment with modern best practices.

SPF Record Validation

Sensagraph checks whether your Sender Policy Framework record correctly authorizes only the mail servers that should send on your behalf.

  • Detects missing, duplicate, or overly permissive SPF records
  • Flags the common "too many DNS lookups" issue that silently breaks SPF
  • Identifies weak policies such as "+all" that allow anyone to spoof your domain

DKIM Signature Checks

DomainKeys Identified Mail ensures that messages have not been tampered with in transit. Sensagraph verifies that DKIM is present and using strong cryptography.

  • Confirms DKIM selectors exist and are published correctly
  • Detects weak key lengths (under 1024 bits) and legacy algorithms
  • Highlights missing DKIM signatures on critical sending sources

DMARC Policy Assessment

DMARC tells receiving mail servers what to do with messages that fail authentication. Sensagraph evaluates whether your policy actually protects your brand.

  • Verifies DMARC records are published and syntactically valid
  • Flags weak "p=none" policies that only monitor but do not block spoofing
  • Checks that reporting addresses (rua/ruf) are configured to give you visibility

MX and Mail Server Review

Sensagraph identifies the mail servers responsible for receiving email on your domain and checks their configuration for common issues.

  • Lists all MX hosts and their priorities
  • Detects missing, misordered, or unreachable mail servers
  • Highlights STARTTLS and encryption support for inbound mail

Modern Standards (BIMI, MTA-STS, TLS-RPT)

Beyond the basics, Sensagraph checks emerging email security standards that improve trust and deliverability.

  • Detects BIMI records that enable verified brand logos in inboxes
  • Reviews MTA-STS policies enforcing TLS on incoming mail
  • Validates TLS reporting endpoints for ongoing visibility

Why email security matters for your business

Poor email configuration is one of the most common — and most exploited — weaknesses on the internet. A single misconfigured record can enable convincing phishing campaigns against your customers or executives.

Prevent Brand Impersonation

Strong SPF, DKIM, and DMARC policies make it dramatically harder for attackers to send emails that appear to come from your domain.

Improve Email Deliverability

Major providers like Google and Microsoft increasingly require proper authentication. Sensagraph helps you meet these requirements so your legitimate emails reach the inbox.

Meet Compliance Requirements

Frameworks and regulations increasingly reference email authentication as a baseline security control. Sensagraph provides the evidence you need for audits.

Frequently asked questions

It is the process of reviewing the DNS records and mail server settings that control how emails from your domain are authenticated. Sensagraph checks SPF, DKIM, DMARC, MX, and related standards to ensure attackers cannot easily impersonate your brand.

Together these three standards prove that an email genuinely comes from your domain. Without them, attackers can send phishing messages that appear to be from you, damaging your reputation and putting customers at risk.

Yes. Each finding includes a clear description, a severity rating, and practical guidance on how to correct the issue, whether that means updating a DNS record or tightening a policy.

No. The analysis only inspects publicly available DNS records and mail server responses. It does not send test emails or interfere with your production email flow.

We recommend running it whenever you change email providers or DNS settings, and at least quarterly, so that misconfigurations or drift are detected quickly.