SPF Soft Fail — Everything about SPF Failures

What is SPF?

How Does SPF work?

What does an SPF Failure Mean?

SPF failure occurs when:

  • multiple SPF records were found on the domain
  • unable to resolve the domain name in the DNS
  • the number of DNS lookups involved in a single SPF check exceeds 10
  • the number of void lookups involved in a single SPF check exceeds 2
  • unable to find the SPF record on the domain
  • the SPF record is not syntactically correct
  • the IP address is not on the list specified in the SPF record
  • none
  • neutral
  • SPF soft fail
  • fail, or SPF hard fail;
  • temperror, or temporary error
  • permerror, or permanent error

What is the difference between an SPF soft fail and an SPF hard fail?

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