Deep dives into DNS configuration, email deliverability, and network security.
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When a message lands in your inbox, most of its journey is hidden from view. The raw email header is the “passport” that records every hop, verification check, ...
Email spoofing is the digital equivalent of a forged signature—attackers send messages that appear to come from a trusted domain, hoping recipients will click a...
Brand Indicators for Message Identification (BIMI) lets email recipients see a verified brand logo next to authenticated messages in their inbox. Think of it as...
Configuring DKIM (DomainKeys Identified Mail) for your Zendesk email ensures that messages sent from support agents land in inboxes, not spam folders. Below is ...
Think of email authentication like a security guard at the front desk of a corporate building. SPF checks “Did this person come in on a company‑issued badge?” D...
When Amazon Simple Email Service (SES) rejects a message because of an SPF flattening error, the problem is usually hidden in a maze of DNS lookups. Below is a ...
Setting up DMARC for Google Workspace can feel like wiring a new circuit: you need the right components, a clear diagram, and a safe way to test before you flip...
DMARC (Domain-based Message Authentication, Reporting & Conformance) is the traffic cop at the intersection of SPF and DKIM. It tells receiving mail servers whe...