SPF Failure Explained: How to Fix Authentication Issues
Have you ever sent an email only to find out it was rejected, marked as spam, or completely…
More from Email Infrastructure
Practical guidance on setup, configuration, and compliance across SMTP, DNS, authentication, IP reputation, and the systems that power email delivery.
DMARC Reject Policy: What Is It?
DMARC, known as Domain-based Message Authentication, Reporting, and Conformance, sets the rules for email security. Choosing the Reject…
SPF Alignment Failed
Email security relies heavily on strong authentication measures to combat fraud and protect against unauthorized senders. An important…
ISP vs. ESP: What’s the Difference?
Two crucial players stand out in cyberspace: Internet Service Providers (ISPs) and Email Service Providers (ESPs). While their…
Multiple SPF Records for One Domain
If you’re employed in the corporate world or run your own business, you likely rely on emails as…
What Is IP Blacklisting?
A blacklisted IP address is an Email Manager’s worst nightmare. Depending on your background, IP Blacklisting can mean…
Email Return Path: How To Use It to Your Advantage
The goal of every email marketer is simple: land their emails straight into their target’s inboxes. Yet, the…
Mastering SPF Syntax: A Step-by-Step Guide
Just like how a fingerprint biometric or PIN code communicates to your phone that you’re the device owner,…
The Essentials of Email Infrastructure
Email marketing usually involves a complex web of elements like servers, domain name systems, and IP addresses- all…
DMARC Quarantine: A Comprehensive Overview
Nearly 1.2% of all global emails are malicious, translating to 3.4 billion daily phishing emails. [1] Cybercriminals do…