Sender ID, How to Disable a Failed Microsoft Initiative

Sender ID uses 'spf2' to identify the DNS TXT record, leading one to believe that Sender ID is version 2 of the SPF framework.  It is not.  This misnomer denotes a broken framework championed by Microsoft.  Precautions need to be taken to prevent Sender ID from misusing SPF records.

The simplest way to prevent interference with SPF records is to create a Sender ID DNS TXT record with an empty policy as shown below:


Sender ID validation will not misuse the SPF record if the above empty record exists in the domain's TXT field.  This effectively turns off Sender ID validation.

External Resources

September 26th, 2012 Posted by Jon Jaroker Filed in: Domain TXT Records

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