Forum Discussion
Third party email vendors and DKIM
Our group supports many agencies with in one tenant and with one sending domain. That said there are many outside vendors that send as "ourdomain.com". Is there a limit to the number of DKIM entries ...
Michael Wehking You can only have one DKIM per domain. If external vendors are spoofing your domain, DKIM will not work for you. You will need to use just SPF records.
