Unable to setup DKIM via PS (empty selectors)

New Contributor

I'm trying to setup DKIM for my new Microsoft 365 instance. I created two CNAME entries, which I verified via dmarcanalyzer.com (selector1, selector2). 


I got the selector names from: 


Get-DkimSigningConfig | FL Identity,Selector1CNAME,Selector2CNAME


However, when I run:

Set-DkimSigningConfig -Identity my.domain -Enabled $true


CNAME record does not exist for this config. Please publish the following two CNAME records first.


I get the same two blank {0} and {1} when enabling DKIM from the Exchange protection console. 


What's going on?

3 Replies
If the records are in place and correct it may be a DNS issue? Best to contact MS support to get them to check.

@SeanMcAvinue ya it was a typo in a DNS record that was causing the problem. However, the PS error and Exchange console could have returned more helpful information than just blank {0} and {1} data. But it's now working.

Good to hear, I've been caught out on typos with DKIM before .