SPF Record Deprecated

Nadhrah Nini 21 Reputation points

Hi Support,

I have configured the 3rd party secure email gateway for my Office365. After adding the 3rd party SPF record, I can see from the MXToolBox for the SPF record Lookup, there is a warning sign at SPF Record Deprecated; Result: The DNS record type 99 (SPF) has been deprecated.

Please advise.


Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Lucas Liu-MSFT 6,141 Reputation points

    Hi @Nadhrah Nini ,
    What format of SPF record do you set?

    According to the MXToolBox article, the cause of the warning is "The use of alternative DNS RR types that was formerly supported during the experimental phase of SPF was discontinued in 2014. SPF records must now only be published as a DNS TXT (type 16) Resource Record (RR) [RFC1035].". So please check and make sure that the format of the SPF record you set is TXT.

    For more information please refer to: SPF Record Deprecated
    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.


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