step 1: Add a mail route for a domain
- In your Google Admin console(at admin.google.com)…
- Go to Apps > G Suite > Gmail > Advanced settings.
- Click Hosts.
- Click Add Route.
- Enter a route name. Use anything that’ll help you keep track of the route.
- Specify any email servers for the route.
- If you select Single host, enter the route’s hostname or IP address. We recommend you use the hostname. Also, enter the port number: 25, 587, or a number between 1024 and 65535.
- E.g pluto.dnsindia.net:25
step 2: Set up routing for your domain or organization
Initial step: Go to Apps > G Suite > Gmail > Advanced settings in the admin.google.com Go to General settings>Routing>Routing>configuration> follow below snapshot on next pageStep 1: Enter email messages to affect Step 2: Set up an envelope filter
Step 3: Specify what happens to the messages > refer two snapshots below.
https://support.google.com/a/answer/6297084#initial-step