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9 min
DNS basicsRecords
DNS Record Types Explained: A Complete Guide
If DNS is the phone book of the internet, record types are the different kinds of listings inside it. Here is a practical tour through every type you are likely to see.
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11 min
Email securitySPFDMARCDKIM
SPF, DKIM, and DMARC Explained for Non-Experts
Three letters, three records, one big goal: make sure nobody can send email pretending to be you. Here is what each one actually does, in language you can use with your boss.
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8 min
DNS basicsPropagationTTL
How DNS Propagation Works (and Why It Takes Time)
"DNS propagation" is a misleading phrase. Nothing actually propagates. What is really happening is that caches are expiring at different rates around the world.
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