A client of ours has 2 separate Salesforce orgs. Their organization uses one email domain for sending out emails (e.g firstname.lastname@example.org**). Their users send out emails from Salesforce using this domain address.
If we were to implement DKIM on the email domain, how do we do the DKIM settings on both Salesforce orgs? If we only carry out the settings on one Salesforce org, will it affect the email deliverability of the other org?