For G Suite.
For Office 365.
How to check the SPF record to ensure that it is correctly registered?
Please refer to the URL below how to verify SPF record.
Output is below in case no syntax error is produced.
• SPF record passed validation test with pySPF (Python SPF library)!
Output is below describing symptom in case any error including syntax error is produced.
• Results - PermError SPF Permanent Error: Too many DNS lookups
In case the maximum reference count to DNS is over.
*Refer to the site above for detail information.
The below is reference information for typical syntax errors.
• The maximum reference count to DNS is over.
DNS record including mechanism with reference (such as include:) or modifier cannot be designated more than ten times. In addition the target reference containing further reference is additionally counted. Please note that any change for target reference is should be well taken care of.
• No SPF record referred to is not existed.
When mechanism with reference to one such as include: is used it might end up with syntax error if the target referred to is not existed.
• Multiple SPF record statements are existed.
One of them can be referred to when multiple SPF records existed.
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