The steps are the same when using Exchange SMTPS Offloaded and Exchange SMTP with STARTTLS application templates. To add the Virtual Services for Exchange SMTPS Offloaded and Exchange SMTP with STARTTLS using the template, follow the steps below:

  1. Click the Add New button.
  2. Enter a Virtual Address.
  3. Select the Exchange 2019 SMTP or the Exchange 2019 SMTPS template from the Use Template drop-down list depending on your preference.
  4. Click Add This Virtual Service.
  5. Expand SSL Properties (Acceleration Enabled).
    Note: SSL acceleration only does offloading (and not re-encrypting) for this Virtual Service.

  6. Select the certificate to use in the Available Certificates and click the “arrow” > to move it to Assigned Certificates.
  7. Click Set Certificate.
  8. Expand the Real Servers section.
  9. Click Add New.
  10. For the Real Server Address, enter the IP Address for one of the Exchange Servers.
    Note: Ensure port 25 is entered in the Port field.
  11. Click Add this Real Server.
  12. Add any additional Real Servers as required.
Note: SMTPS can be configured as offloaded as outlined above but cannot be set to Reencrypt.