Setting up the Inbound Email Traffic under Microsoft 365

You can set up inbound email traffic under Microsoft 365 to have your incoming emails processed by our services.

In order to route your incoming emails from senders outside your organization through our infrastructure and thus have them processed, you need to set up the inbound email traffic for your domain under Microsoft 365. These emails are then first received by us, then processed and finally forwarded to your Microsoft 365 environment.

  1. Enter Microsoft 365 as the destination server for forwarding the emails you receive from us (see Configuring Microsoft 365 as a Destination Server).
    Note:

    This setting is only necessary in individual cases (see Configuring Microsoft 365 as a Destination Server).

    We are aware of your Microsoft 365 environment and can forward the incoming emails received and processed by us to the mailboxes of your domain under Microsoft 365.

  2. Adjust the MX record of your domain so that it points to our servers (see Adding an MX Record to the DNS).

    Incoming emails addressed to your domain will be routed to us. After processing them with our services, we forward your emails to your Microsoft 365 environment, which has been defined as the destination server in the first step.

  3. Restrict the inbound email traffic of your Microsoft 365 mailboxes to emails sent from our IP address ranges (see Configuring Connector for Outbound Email Traffic).

    Only emails processed by our services will be delivered to your Microsoft 365 mailboxes. All emails not coming from our IP address ranges will be rejected.

The inbound email traffic of your domain has been set up. Your Microsoft 365 mailboxes cannot receive emails that have not been processed by our services.