I am getting this error when sending email from within CRM 365 web front-end. Their Mailbox is configured to only use MS Dynamics 365 Outlook for both Incoming and Outgoing Email. I have clicked the "Test & Enable Mailbox" button and "Approve Email" and the Status always stays in "Not Run". After clicking "Continue" on error message, the email does get Sent using Outlook, but is there a setting in Outlook or CRM 365 to fix this error message pop-up?
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