Configuring SMTP Authentication

To configure an SMTP authentication, you must create a specific user account for sending mail (e.g. [email protected]):

  1. Log on to the Administration Console.
  2. Click on the Administration menu item.
  3. Select the Directories | Internal Directories menu item. A list of your domains is displayed.
  4. Select a Domain. A list of the domain's users is displayed.
  5. Click on the New Address button.
  6. Complete the dialog as follows:
    • Enter the Email Address of the assigned account.
      Note: We recommend not using an administrator account, because if the SMTP auth username and password is shared widely (e.g. among people configuring the printers) there could be issues.
    • Enter a Password for the account and make note of it.
      Note: Cloud passwords must be used to allow SMTP / POP submission. Ensure the default application setting has cloud password enabled. See the Managing User Email Addresses page for further information.
    • Enable the Password Never Expires setting.
    • Enable the Allow SMTP Email Submission setting.
  7. Click on the Save button.

Configuring the Device for SMTP

Configure the device to:

  1. Use Mimecast's IP Addresses as the SMTP server. See the table below for the IP addresses for your region.
    Region IP Addresses
    Europe (Excluding Germany) eu-smtp-outbound-1.mimecast.com
    eu-smtp-outbound-2.mimecast.com
    Germany de-smtp-outbound-1.mimecast.com
    de-smtp-outbound-2.mimecast.com
    United States of America us-smtp-outbound-1.mimecast.com
    us-smtp-outbound-2.mimecast.com
    Canada ca-smtp-outbound-1.mimecast.com
    ca-smtp-outbound-2.mimecast.com
    South Africa za-smtp-outbound-1.mimecast.co.za
    za-smtp-outbound-2.mimecast.co.za
    Australia au-smtp-outbound-1.mimecast.com
    au-smtp-outbound-2.mimecast.com
    Offshore je-smtp-outbound-1.mimecast-offshore.com
    je-smtp-outbound-2.mimecast-offshore.com
  2. Use Port 587.
  3. Enable TLS Encryption.
  4. Enable Authentication using the same logon credentials (email address and password) as configured above.

Bypassing an Anti-Spoofing Policy

In specific customer accounts, an Anti-Spoofing Policy may be enabled to prevent unauthorized access to your Mimecast mail service. This is evident if during testing, an "550 Anti-Spoofing policy - Inbound not allowed" error is returned. In this instance, enable an Anti-Spoofing SPF Based Bypass Policy for your email addresses.