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Glite Dictionary
🌞 Sun protection level 📧 Email security check
SPF

SPF

1 7.4
A way for a domain to list which mail servers can send its email to stop fake emails
  • noun
  • Texting
translation icon : registro SPF
  • For example, the Sender Policy Framework (SPF) uses the Simple Mail Transfer Protocol (SMTP) to reject forged email addresses.

Examples

  • I take the IPs in the service's SPF record and then record how much mail comes from these accounts.

    Blog text (26)

  • The first one is SPF, Sender Policy Framework.

  • Prior to SPF, your email server could get away with not following that requirement in the RFC.

    Blog text (14)

  • Whereas the reasons for changing the reverse path are many and long-standing, SPF adds enforcement to this requirement.

    Blog text (14)

  • However, SPF enforces the requirement; therefore, Exchange behaves in a compliant manner so that the mail will be delivered successfully.

    Blog text (14)

  • To prevent address spoofing, many domain owners create an SPF record to specify authorized mail servers.

  • An SPF record helps ensure that only certain email servers can send messages for your domain.

  • Setting up an SPF record is essential for improving the security of your email communications.

Surface Forms

SPF singular
SPFs plural

Morphology

SPF = sender + policy + framework (semi-transparent) = S + P + F

The initialism directly represents 'Sender Policy Framework', but the technical sense (email authentication using DNS records) is specialized and not fully derivable from the components for average learners.

Etymology

SPF in email stands for Sender Policy Framework, which is a short name for a set of rules a domain publishes to say 'which mail servers are allowed to send mail for that domain'. So SPF helps receiving servers check and block fake senders.