An SPF record uses the ptr mechanism.

SPF_PTR_MECHANISM · Severity: Warning

• WarningSPF_PTR_MECHANISM

  An SPF record uses the ptr mechanism.

  RFC 7208 says the ptr mechanism should not be used: it is slow and unreliable, and some receivers do not support it well.

  Recommendation: Replace ptr with ip4, ip6, a or include terms.

Reported by

• Mail configuration check
• SPF check

Available through the API

• Mail configuration check API
• Bulk mail configuration check API
• SPF check API

Related findings

• Error SPF_PASS_ALL The SPF policy ends with +all.
• Error SPF_INCLUDE_LOOP The SPF chain returns to a domain it already evaluated.
• Error SPF_INCLUDE_NOT_FOUND An included or redirected domain has no SPF record.
• Info SPF_MACRO_NOT_EVALUATED An SPF record contains macros that were not evaluated.
• Error SPF_MULTIPLE_RECORDS More than one SPF record was found for a name in the SPF chain.
• Warning SPF_NEUTRAL_ALL The SPF policy ends with ?all.

All findings