Setting up forwarding to Microsoft 365

NOTE: A TLS certificate issued by a Microsoft trusted root certification authority is required to set up the forwarding to Microsoft 365. You can find an up-to-date list of familiar CAs at https://docs.microsoft.com/en-us/security/trusted-root/participants-list.

In this step, you configure NoSpamProxy® so that all inbound emails are forwarded to Microsoft 365. To do this, you must edit the corresponding send connectors.

1. Go to Configuration > Email routing.
2. Under Inbound send connectors, click Switch to queued delivery.
   
3. In the Change delivery dialog, select Replace delivery.
   

   NOTE: From version 13 on, this step is no longer necessary, since direct delivery is no longer supported from this version on.

4. In the dialog box that appears, select Office 365 and click Next.
   
5. Type any name for the inbound send connector, and then select the Gateway Role(s) that you want to process emails to Office 365.
6. Click Next.
   
7. Click Select certificate to specify a client identity certificate that NoSpamProxy can use to authenticate to the Office 365 server.
   
8. In the following dialog box, select the TLS certificate that you have previously applied for from a root CA trusted by Microsoft, and then click Select and close.
   
9. Click Select and close.
10. Click Finish in the following dialog box.
11. Under Receive connectors, open the receive connector in use and switch to the Connection security tab.
12. Select either the certificate provided by NoSpamProxy or the certificate you requested previously.
13. Click Select and close, then Save and Close.

The configuration for NoSpamProxy is now complete.

Next steps

Now continue with the following steps:

Configuring Microsoft 365

Creating the transport rule

Using NoSpamProxy in Microsoft 365 with Exchange Online

Necessary configurations for the operation in Microsoft Azure