Topic
DNS
Practical guides tagged DNS, collected from the Zeqo blog.
Can You Have Two SPF Records? (No — and Here's How to Merge Them)
Adding a second SPF record doesn't add senders — it invalidates both. Here's the rule, and the correct way to merge.
What Is My DKIM Selector? How to Find It (Provider Lookup Table)
Your DKIM selector is the prefix in the DNS lookup — and most providers use a predictable default. Here's the table, and how to find yours if it isn't listed.
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.
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.
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.