SPF File Validation - Test Your SPF Records

Protected by SPFWhat is SPF? SPF (Sender Policy Framework) fights return-path address forgery and makes it easier to identify spoofs. Domain owners identify sending mail servers in DNS. SMTP receivers verify the envelope sender address against this information, and can distinguish authentic messages from forgeries before any message data is transmitted.

This SPF testing tool is brought to you by the good folks at DNS Report and DNS Stuff, an excellent resource for network and domain name tools.

Enter the Email Address or Domain or SPF String


For example, example.com or user@example.com or v=spf1 -all

Enter the IP Address Email is Coming From


If left blank the SPF testing utility from DNS Stuff will use your IP address of 38.103.63.60. Note, you must enter the IP address of the source where mail is being sent from. For example, if you entered your domain in the first field above, you would enter the IP address of your SMTP server in the second field (the IP address of the server where you send mail from) for the SPF test to return the correct results.

Possible Results from the SPF Testing Utility from DNS Stuff

Pass
This IP is authorized to send email from this domain.
Fail
This IP is not authorized to send email from this domain.
SoftFail
This IP probably is not authorized to send email from this domain, but the domain owners are not certain.
Neutral
The domain does not know if the IP is allowed to send email or not.
TempError
A temporary error occurred. The email should be retried later.
PermError
A permanent error was encountered. The email should be rejected.
None
No SPF record was found. It cannot be determined if the IP is allowed to send email from this domain.

Last modified: 2008-09-25T07:25:49-0700

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