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    Adding Enterprise Exchange Email Account to Outlook Prevents Sending via Account

    The full error code received in bounced messages sent via account in Outlook (version 1812) is: 0x80070005-0x000004dc-0x00000524 The error message: "This message could not be sent. You do not have the permission to send the message on behalf of the specified user." (Other than...
  2. D in Outlook 2016 Trys & Fails to Send on Behalf of Itself

    I was using Outlook 2016 for several email accounts including an account, a Gmail account, and several Office 365 Exchange accounts. No problems. Then in December, maybe upon the transition to Exchange, sending mail or replying to mail via the account in...