1.Login to admin panel
2.Go to Apps>G suite>Setting for Gmail>Advanced settings
3.Go to Hosts.
4.Give the name as “server”.
5.Under Specify email server:
a) Select single host.
b) Enter server IP and port 25.
c) Click on save.
- Under general settings.
- Go to routing.
- Click Configure.
- Under Messages to affect:
a) Select “inbound” and “Internal – receiving”.
6.Select Change route.
7.Select the secondary mail route from the list(server).
8.Scroll down and click Save.
- Under “Account types to affect”
Select “Unrecognized / Catch-all” and deselect “Users”
Note: Also add the forwarder for the Email ID present in google apps.
and only select the option available in steps, the rest should be left blanked or unchecked