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$ curl repovive.com/roadmaps/network-design/dhcp-and-dns/dns-txt-records

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$ curl repovive.com/roadmaps/network-design/dhcp-and-dns/dns-txt-records

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DNS TXT Records - DHCP and DNS | Network Design | Repovive

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Network Design26 sections · 911 units44h total

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DNS TXT Records

Arbitrary text data

TXT records store arbitrary text in DNS. They have many uses.

SPF records for email authentication:

example.com.  3600  IN  TXT  "v=spf1 include:_spf.google.com ~all"

Domain verification for services:

example.com.  3600  IN  TXT  "google-site-verification=abc123"

DKIM for email signing, DMARC for email policy. TXT records became the catch-all for domain-related verification and configuration.