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DKIM Selector2 Not Working for Microsoft 365 Domain

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DKIM Selector2 Not Working for Microsoft 365 Domain 01

If you are a Microsoft 365 user with DKIM enabled on your office 365 domain, you may notice a no DKIM record found error for selector2. This means that when your DNS is being queried using selector2 as a resource locator, no results are available and the receiving server is failing to locate any DKIM record for selector2. Why is DKIM selector2 not working for Microsoft 365 domain? Let’s find out. 

No DKIM record found for selector2

Let’s take a look at a situation for DKIM selector2 not working: 

We registered a domain on Office 365 under the name o365inmail.com and configured DKIM records for this domain configuring 2 selectors: selector1 and selector2 

Now we use the PowerDMARC DKIM record lookup tool to look up the records for both selectors, one by one. 

DKIM selector1 Results:

dkim selector2 not working

 

DKIM selector2 Results:dkim selector2 not working

In the above examples we have the following key takeaways:

  • DKIM selector1 functioning as it should and locating valid DKIM DNS record data on lookup 
  • DKIM selector2 not working and returning “No records found” result on lookup 

How to fix “DKIM Selector2 Not Working”? 

The solution around this problem is to enable DKIM key rotation for Microsoft 365. Here’s how you do it: 

  • Log in to your Microsoft 365 Defender portal 
  • On the left hand side navigation pane, select Policies & Rules > Threat Policies > Email Authentication Settingsdkim selector2 not working
  • Toggle the header menu to DKIM 
  • Select your domain name from the list of domains 
  • Select the “Rotate DKIM keys” option

dkim selector2 not working

On doing this the status must display “Rotating keys for this domain and signing DKIM signatures” which denotes that your DKIM keys will now be periodically rotated before signing outgoing emails. 

dkim selector2 not working

Final Step: Testing the DKIM selector2

To make sure everything is working properly post enabled key rotation, you can now perform a DKIM lookup for the second time using selector 2. 

dkim selector2 not working

This confirms that DKIM selector2 not working error has now been resolved! 

dkim selector2 not working

  • About
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Ahona Rudra
Digital Marketing & Content Writer Manager at PowerDMARC
Ahona works as a Digital Marketing and Content Writer Manager at PowerDMARC. She is a passionate writer, blogger, and marketing specialist in cybersecurity and information technology.
Latest posts by Ahona Rudra (see all)
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December 16, 2022/by Ahona Rudra
Tags: dkim selector2, dkim selector2 errors, dkim selector2 not working, no records found for dkim selector2, office 365 dkim selector2 not working
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