I use Office 365 to host my companies mail server, the DNS of which is controlled by CloudFlare. I am currently trying to add DKIM (DomainKeys Identified Mail) authentication to my outgoing mail.
The way to do this (according to Microsoft) is to add 2 CNAME records to your DNS record (removed company name for confidentiality):
NAME: | VALUE:
selector1_domainkey | selector1-companyname-co-uk._domainkey.companynameltd.onmicrosoft.com
selector2_domainkey | selector2-companyname-co-uk._domainkey.companynameltd.onmicrosoft.com
I did this about 2 weeks ago, however for some reason I am still not able to enable DKIM authentication from the O365 portal, which throws the error message that the CNAME records can’t be found.
I opened up a ticket with Microsoft who couldn’t resolve my issue, and suggested that I asked you guys instead. So here I am!
Does anyone have any experience with setting up DKIM authentication behind CloudFlare? If so, did you face these same issues?
All help is greatly appreciated!