Setting up an SMTP Connector: Exchange 2016 / 2013 / 2010

Document created by user.Yo2IBgvWqr Employee on Dec 8, 2017Last modified by user.Yo2IBgvWqr Employee on Apr 2, 2019
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One of the Mimecast implementation steps is to direct all outbound email via Mimecast. This requires an SMTP Connector to be configured on your Exchange Server. Prior to Mimecast accepting outbound emails, the Authorized IP Address where emails will be sent from must be added to your Mimecast account.


Setting Up an SMTP Connector


To set up an SMTP Connector, follow the steps on Microsoft's website, depending on your Exchange:


When prompted in the Microsoft guide, select the Route mail through smart hosts option and then click + Add. In the Add smart host dialog that displays, enter the Mimecast smart host IP for your region as below:



North America



Disable or remove any other Outbound Send Connectors that were previously used. Failure to do this means your outbound email still uses these older send connectors, and is not routed through Mimecast. Any send connectors used for other purposes (e.g archiving) may still be required to be enabled. If in doubt, consult your Mimecast Support engineer.

Verifying the Connection

To confirm that outbound mail is flowing:

  1. Send an outbound email to an external email address.
  2. Log on to the Mimecast Administration Console.
  3. Navigate to Administration | Message Center | Accepted Messages.
  4. Refresh the screen until you can see the details of the test email you have sent.


Next Steps


Once outbound emails are successfully routing through Mimecast, proceed to the next steps of the Connect process:


See Also...