Apple mail cannot send message using the server exchange

A common issue!

When Apple Mail can't send a message using an Exchange server, it's often due to a misconfiguration or a temporary issue. Here are some troubleshooting steps to help you resolve the problem:

  1. Check your Exchange account settings:
    • Make sure your Exchange account is set up correctly in Apple Mail. Go to Mail > Preferences > Accounts, select your Exchange account, and verify that the server settings are correct.
    • Ensure that the "Use SSL" option is enabled, as Exchange servers typically require SSL/TLS encryption.
  2. Verify your username and password:
    • Double-check that your Exchange username and password are correct. You can try resetting your password or contacting your Exchange administrator if you're unsure.
  3. Check the server settings:
    • Ensure that the Exchange server settings are correct:
      • Server address: Check that the server address is correct and matches the one provided by your Exchange administrator.
      • Port: Verify that the port number is correct (usually 443 for SSL/TLS or 25 for unencrypted connections).
      • Authentication: Ensure that the authentication method is set to "Microsoft Exchange" or "Exchange ActiveSync".
  4. Disable and re-enable the Exchange account:
    • Go to Mail > Preferences > Accounts, select your Exchange account, and click the "minus" button to disable it.
    • Wait for a few seconds, then click the "plus" button to re-enable the account.
  5. Check for any firewall or antivirus software issues:
    • Ensure that your firewall or antivirus software is not blocking the connection to the Exchange server.
  6. Try sending a test email:
    • Compose a new email and try sending it to a different recipient (not an Exchange user). If the email sends successfully, the issue might be specific to the Exchange account.
  7. Reset the Exchange account:
    • Go to Mail > Preferences > Accounts, select your Exchange account, and click the "Reset" button.
    • Follow the prompts to re-enter your account settings and password.
  8. Contact your Exchange administrator:
    • If none of the above steps resolve the issue, contact your Exchange administrator to check if there are any issues on their end or if they can provide additional guidance.

By following these steps, you should be able to resolve the issue and send emails using your Exchange account in Apple Mail.