Guides

How to Spot Phishing When DMARC Authentication Passes
A phishing email can pass DMARC and still be dangerous. DMARC confirms that the message’s sending infrastructure is authorized and that the visible From domain…
Building a Practical Domain Trust Policy for Security Operations
A domain trust score policy gives a security operations team a consistent way to assess whether a domain is safe, properly authenticated, and suitable for…
Bulk DKIM Checks for Finding Exposed Signing Keys
Bulk domain analysis can quickly reveal email authentication weaknesses across a portfolio. It is useful for security teams managing many brands, subsidiaries,…
How to Analyze DMARC Failures from Compromised Sending Sources
A DMARC failure means an email did not satisfy the authentication and alignment rules published by a domain owner. When the sending source has been…
How to Detect a Hijacked Domain Used for Spam
A compromised domain can be turned into a delivery platform for phishing, malware, fake invoices, and high-volume promotional spam. Attackers may gain access…
How to Set Up Automated Alerts for Domain Reputation Changes
A strong domain reputation supports reliable email delivery and helps recipients distinguish legitimate messages from phishing attempts. Reputation can change…
Responding to a Sudden Drop in Domain Trust
A critical domain falling below its acceptable trust threshold can disrupt email delivery, expose customers to impersonation, and signal an active compromise.…
How External Tools Can Change Your Domain Trust
A domain’s trust score reflects more than the quality of its website or mail server. Every platform authorized to send messages for the domain can influence…
How Sender Scoring Classifies Unknown Inbound Emails
Unknown inbound emails are not automatically malicious. A message may come from a new supplier, a recently configured marketing platform, or a legitimate…
A Practical Weekly Domain Trust Health Scan
A domain can remain active and deliver email while its trust posture quietly deteriorates. Expired authentication records, unauthorized senders, DNS changes,…