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MAILCONEWS - Exchange Mailbox Access Rejected

Fix this error by verifying the Exchange server URL and Azure permissions for the configured mailbox.

MAILCONEWS appears when the Exchange server rejects the request from ServiceOps to access the configured mailbox. This error affects servers configured with Exchange/MAPI protocol. Use this page to verify the Exchange URL and Azure permissions and restore mailbox access.

Error CodeMAILCONEWS
Error MessageCould not access the Exchange mailbox. The request was rejected by the server.
SeverityHigh
AffectsIncoming and Outgoing Email Servers (Exchange/MAPI)

Symptoms

Look for these signs to confirm this error is active.

  • The mailbox configured with Exchange/MAPI protocol fails to sync or send emails.
  • The error indicates the request to the Exchange server was rejected.

Root Cause

One or more of these conditions caused the Exchange access to be rejected.

  • The Exchange server URL in ServiceOps is incorrect or the server is not accessible.
  • The email account doesn't have Exchange Web Services access enabled.
  • The Azure application is missing the required permissions to access the mailbox.
  • Admin consent has expired or been revoked in Azure Active Directory.

Resolution

Follow these steps to restore Exchange mailbox access.

  1. Enter the password again and save the configurations on the server card, then complete the Microsoft sign-in.
  2. Verify the Exchange server URL in the configuration is correct and accessible.
  3. If the issue persists, contact your Azure Administrator to verify the application has the required Exchange permissions and that admin consent is granted.
Related FAQs

See Email Server FAQs for: "Why did the OAuth incoming server suddenly stop fetching emails?" and "Why did the OAuth outgoing server stop sending emails after working fine?"