the SPF text record is been updated/mapped need to check working fine ?

[bsrinu001]

Hi Team,

We recently added a new domain to our ironport servers and the SPF text record is been updated/mapped( of the existing domain) at the  DNS end. needs to check is SPF is working ? please suggest how to test for SPF check is fine with external domain and email authentication as well 

[Ken Stieers]

To check it from outside, go to one of the web services, and use their spf tester...

I use dnsstuff.com.  Click on "Professional Toolset" in blue at the top, scroll down to the Email Tools section, and in the Sender Policy Framework box, enter the IP and an email address for that domain..

It will run the test and tell you what it sees, from the outside.

[exMSW4319]

Microsoft recommend Dmarcian:

https://support.office.microsoft.com/en-us/article/Tools-you-can-use-to-validate-SPF-records-for-your-domain-92a43f6a-4651-455a-a1cc-300684bedcfa?ui=en-US&rs=en-US&ad=US

On reading that article, my reaction was "who are you, and what have you done with the real Microsoft Messaging development team?" (Probably exactly what the rest of us have been suggesting for years.) Alas, many O365 implementers find the link excessively challenging. 

https://dmarcian.com/spf-survey/ - now with an annoying captcha.

SPF lists permitted equipment for a domain, not vice-versa. If you are publishing a new domain, it needs its own DNS records.