DKIM Explained: How It Works and How to Set It Up
How DKIM signing and verification actually works, how to publish your first selector record, and the most common setup mistakes.
MXCorrect Blog
Practical guides on DNS, SPF, DKIM, DMARC and email deliverability.
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DMARC p=none vs p=quarantine vs p=reject: Which Should You Use?
A practical rollout path from monitoring to full enforcement, and the alignment mistake that trips up most DMARC deployments.
SPF Record “Too Many DNS Lookups”: How to Fix the 10-Lookup Limit
Hitting an SPF permerror from too many DNS lookups? Here’s what counts toward the 10-lookup limit and exactly how to flatten your record.