Using a Google App with Mimecast

Document created by user.oxriBaJeN4 Employee on Aug 12, 2016Last modified by user.oxriBaJeN4 Employee on Nov 21, 2016
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Mimecast provides dedicated hosts for inbound, outbound, and journal communication, which will support Google Apps. Google Apps does not have a journaling feature, but all messages exchanged internally are delivered via the mail gateway / smart host that has been set up automatically.

 

Setting Up Your Inbound Email

 

To setup your inbound email:

  1. Log into https://admin.google.com using your Super User account credentials.
  2. Click on Google Apps.
  3. Click on the Gmail icon.
  4. Click on Hosts in the "Settings for Gmail" page.
  5. Click Add Route. The Add Mail Route dialog is displayed.

  6. Complete as follows:

    Field / OptionDescription
    NameSpecify a description for the route.
    Specify Email ServerSelect "Multiple Hosts" from the drop down list.
    Enter Home Name or IP

    In the primary section, enter the primary SMTP hostname, the port number (25) and enter a load balance percentage (50%).

    In the primary section, enter the secondary SMTP hostname, the port number (25) and enter a load balance percentage (50%)

    Leave the secondary section blank. If you enter one SMTP hostname into the Primary and Secondary fields and assign a load balance percentage a validation error is thrown.
    Perform MX Lookup on HostLeave unchecked.
    Require TLS DeliveryEnable or disable TLS as required.
    Require CA Signed Certicate.If you've enabled "Require TLS Delivery", select this option.
  7. Click the Save button.

 

Setting Up Your Recipient Validation

 

To setup your recipient validation, continuing from above:

  1. Go back to the Settings for Gmail page.
  2. Click on Advanced Settings.
  3. Scroll down to the Spam section.
  4. Enter the Mimecast Data Center Ranges for your region in the "Inbound Gateway" section. See the Mimecast Data Centers and URLs page for full details.
  5. Select the Only Let Users Receive Email from the Email Gateways Listed Above. All Other Mail Will Be Rejected option.

  6. Click Save.

 

Setting Up Your Outbound Email

 

To setup your outbound email, continuing from above:

  1. Scroll down to the Routing section.
  2. Click Add in the Sending routing section. The Add Setting page is displayed.

  3. Complete as follows:

    Field / OptionDescription
    NameSpecify a name for the route (e.g. SMTP Mimecast).
    Email Messages to EffectSelect the Outbound option.
    For the Above Type of Messages, Do the FollowingSelect "Modify Message" from the drop down.
    RouteClick the "Change Route" option and select  the route you previously created.
  4. Click the Save button.

 

Setting Up Your Journaling

 

To setup your journaling, continuing from above:

  1. Add another Route called "Journal - Mimecast".

    Field / OptionDescription
    NameSpecify a name for the route (e.g. SMTP Mimecast).
    Email Messages to EffectSelect the Inbound option.
    For the Above Type of Messages, Do the FollowingSelect "Modify Message" from the drop down.
    RouteClick the "Change Route" option and select  the route you previously created.
    Envelope RecipientSelect this option, and specify the email address of the Mimecast journal connector you wish to use.
  2. Click Add in the Receiving Routing section. The Add Setting page is displayed.
  3. Complete as follows:

    Field / OptionDescription
    NameSpecify a name for the route (e.g. SMTP Mimecast).
    Email Messages to EffectSelect the Outbound option.
    For the Above Type of Messages, Do the FollowingSelect "Modify Message" from the drop down.
    RouteClick the "Change Route" option and select  the route you previously created.
    Envelope RecipientSelect this option, and specify the email address of the Mimecast journal connector you wish to use.
  4. Click the Save button.

 

Creating a Delivery Routing Definition and Policy

 

The final step to getting your Google application working with Mimecast, is to define a route for delivering your messages. This requires you to:

  1. Create a Delivery Routing Definition. See the Creating / Changing a Delivery Routing Definition page for further details.
  2. Assign the definition to a Delivery Routing policy. See the Delivery Routing Policies page for further details.
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