While not required in G Suite, you may wish to add the same IP addresses to the Email whitelist field. IPs in the Inbound gateway field should be treated as trusted hosts.

 

To add a mail route:

For additional details, refer to the G Suite documentation.

  1. Sign in to the G Suite admin console.
  2. Select Apps > G Suite > Gmail > Advanced settings.
  3. Select the Hosts tab.
  4. Select ADD ROUTE.
    1. Give the route a name, such as Zix Route.
    2. For Specify email server, enter the appropriate host name. The appropriate host name will vary based on your Zix solution. Generally SMB . If you are unsure, please contact Zix Support or view your company’s assets here.
    3. For Options, check Require secure transport (TLS) and Require CA signed certificate.
    4. Select Save.

To create a Routing rule:

For additional details, refer to the G Suite documentation.

  1. Sign in to the G Suite domain console.
  2. Select Apps > G Suite > Gmail > Advanced settings.
  3. Select the General Settings tab.
  4. Scroll to the Routing setting in the Routing section.
  5. Hover over Routing and select CONFIGURE or ADD ANOTHER.
    1. Enter a descriptive name, such as Zix Outbound Routing.
    2. Under Messages to affect, select Outbound.
    3. Under Envelope filter, check Only affect specific envelope senders.
    4. Select Pattern match.
    5. In the Regexp field, enter a regular expression that matches all of your domains. For example: (?i)(domain1.com|domain2.com) For more details on G Suite regular expressions, refer to this article.
    6. Under For the above types of messages, select the following
      1. From the drop down, select Modify message
      2. Under Route, check Change Route and select the route you created from the section above.Example: Zix Route
      3. Under Encryption (onward delivery only), check Require secure transport (TLS).
    7. Select ADD SETTING.
  6. Select SAVE in the bottom right hand corner.