Split delivery should be set up in Zoho only after all the above requisites are addressed, and before the MX records are pointed to Zoho servers. Since all the routed emails will be sent via the same IP address, whitelisting will avoid the chance of emails being identified as spam and will also avoid the rate-limiting of emails. It is highly recommended that Zoho's routing IP address is whitelisted in the Google Workspace account.To avoid this, a catch-all account can be configured in Google Workspace so that these emails do not go missing.

So if the account to which it is addressed is not configured in Google Workspace, the emails could be rejected or a routing failure could occur. In some cases, there could be spam or other emails that are sent to unknown email addresses. Any emails addressed to email addresses that are not configured in Zoho, will be routed to the Google Workspace server.The SPF record that includes both Zoho Mail and Google Workspace values should be mentioned as: While configuring SPF for the domain, the SPF record should include both Zoho Mail and Google Workspace records to authorize emails from both IPs.If your MX records point to Zoho Mail, ensure that your groups are created in Zoho Mail. It is recommended that you create your domain's groups or distribution lists in the server to which your MX records are pointed.Prerequisites to configure Split Delivery For example, if Zoho Mail's MX records are added to your DNS provider, Zoho Mail will be your primary server, and the split delivery configuration has to be set up here. When you configure split delivery, the server to which your MX Records are pointed will be the primary server, and the other server will be the secondary server. This way you will get the benefits of Zoho Mail for one set of users, while the rest of them do not miss out on the features of Google Workspace. In case the account does not exist in Zoho, and instead, in Google Workspace, the email will be routed to the destination Google Workspace that you have mentioned.

So when an account that exists in Zoho receives an email, the email will be received at the Zoho servers. Split Delivery can be set up when a set of your domain's accounts exist in Zoho Mail, and the rest of the accounts exist in Google Workspace. But in case you want your emails to be delivered to a different server, despite using Zoho Mail, you can configure it in the Admin Console. This will ensure that any emails that your domain receives are directed to Zoho Mail's servers. When you configure a domain with Zoho Mail, you will point the MX records to Zoho's designated MX values.

Configuring Split Delivery with Google Workspace.

Prerequisites to configure Split Delivery.

Workspace google