Record TXT

Stores arbitrary text — most often SPF, DKIM, DMARC and ownership-verification tokens.

Cos'è un record TXT?

A TXT record holds free-form ASCII strings. In practice it is the home of email-authentication policy (SPF, DKIM, DMARC), ownership-verification tokens (Google, Microsoft, AWS, Let's Encrypt DNS-01) and a handful of niche protocols.

Esempio di zone file

example.com.    300    IN    TXT    "v=spf1 include:_spf.google.com -all"
_dmarc.example.com.    300    IN    TXT    "v=DMARC1; p=reject; rua=mailto:dmarc@example.com"

Casi d'uso comuni

▸SPF: declare which servers are allowed to send mail "from" your domain.
▸DKIM: publish the public key used to sign your outbound mail.
▸DMARC: tell receivers what to do when SPF/DKIM fail (none / quarantine / reject) + where to send reports.
▸Domain verification: prove control of the domain to a cloud or SaaS provider.

Trappole comuni

A TXT value is broken into 255-character chunks at the wire level — long DKIM keys are stored as multiple quoted strings. Most DNS UIs hide this, but some scripts can mis-concatenate.

Interroga i record DNS →

Tipi di record correlati

MX record

Tells the world which mail servers receive email for a domain.

CNAME record

Aliases one hostname to another — the resolver follows it transparently.

CAA record

Certificate Authority Authorization — declares which CAs are allowed to issue certs for your domain.