DKIM setup Exchange Online Third party bulk mailer

Steel Contributor

Hi All


Hope everyone is gooooood.


I was hoping someone could clear up some confusion I have regarding DKIM.


I have about 7 custom domains.


On one of my custom domains we use a bulk email service. Email get's sent out on behalf of our domain. I believe I will need to get a public key from the bulk email provider to add to my DNS.


What happens if the bulk email provider does not make use of DKIM?

What will happen to the emails they send of my behalf?


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