Topic
DNS
Practical guides tagged DNS, collected from the Zeqo blog.
DeliverabilitySPF
SPF Record Syntax Explained: Includes, IPs, and the 10-Lookup Limit
SPF looks like one TXT record, but includes, redirects, and the 10-lookup limit can quietly break all your mail. Here's how to read it correctly.
8 min read
DeliverabilityDKIM
What Is a DKIM Selector? (And Why “DKIM Missing” Is Often Wrong)
Half the “your DKIM is missing” warnings are false alarms. The reason is the selector — what it is, where it lives, and how to check yours correctly.
7 min read
DeliverabilityDNS
SPF, DKIM & DMARC Explained: A Plain-English Guide for Founders
The three DNS records that decide whether your email lands in the inbox — explained without the jargon, plus how to check yours in 30 seconds.
8 min read