"SPF PermError: too many DNS lookups" is a common error seen in many SPF (Sender Policy Framework) implementations. When an often overlooked SPF 10-DNS-lookup limit is exceeded, an SPF PermError, aka SPF permanent error, is returned. SPF PermError's can affect your email deliverability…
When the SPF record on a domain can't be correctly interpreted, SPF returns a PermError (permanent error). In contrast with an SPF TempError (temporary error), an SPF PermError requires a system administrator to take measures to rectify the issue.
Here is a list of causes of SPF PermError:
multi…
While Safe SPF overcomes the 10-DNS-lookup limit in SPF, sometimes it's desirable to flatten only a part of your SPF record, while leaving the rest as is. If this is the case, you can use partial Safe SPF.
One good reason for this is that some email delivery services like HelpScout, Office 365, At…
When troubleshooting email delivery issues, you might run into some cryptic SPF error on the receiving email server along the lines of:
SPF PermError: too many DNS lookups
SPF Permanent Error: too many DNS lookups
SPF Fail: too many DNS lookups
These messages indicate that the SPF record on…
