Guides
Detecting Phishing From an SPF-Authorized ServerA phishing email can pass a basic SPF check and still be dangerous. SPF confirms that a message was sent from an IP address authorized by the domain’s SPF…Bulk Domain Checking for Vendor Email SecurityVendor relationships often depend on email, from invoices and support tickets to password resets and operational alerts. That makes a supplier’s domain…How to Analyze DMARC Failure Reports for Compromised AccountsDMARC failure reports can reveal that messages claiming to come from your domain are being sent through unauthorized systems. They are valuable for detecting…Why a Null MX Record Can Signal Phishing RiskEmail security investigations often begin with a domain’s DNS records. These records reveal whether a domain can receive mail, which servers are authorized to…What a Sudden Domain Trust Score Drop Reveals About AbuseA sudden decline in a domain’s trust score is rarely a meaningless fluctuation. It can indicate that attackers are impersonating the domain, compromised…Spotting Spoofed Emails Behind Familiar Mail BrandsA spoofed email can borrow the reputation of a familiar mail provider to look routine and trustworthy. Attackers may imitate Gmail, Microsoft Outlook, Yahoo…Build a Custom Trust Checker With Developer ToolsA custom trust checker can turn email and domain reputation data into a practical safeguard for a help desk, security dashboard, signup flow, or internal…How to Detect an Email Spoofing Your Company’s Sender AddressAn email can appear to come from your exact company address while being sent from an unrelated server. This technique, known as sender address spoofing, is…How to Protect Your Domain During an Email Server MigrationMoving email to a new server can expose weaknesses that were previously hidden by familiar infrastructure. DNS records, signing keys, sending services, and…How to schedule recurring trust score checks for critical domainsA domain’s email reputation can change without warning. A compromised mailbox, misconfigured DNS record, sudden increase in sending volume, or new third-party…