Fortimail + Mail provider

Hi.

I have FortiMail 200F (v7.4.3)

Fortimail is in Gateway Mode.

I want to configure Fortimail so that incoming mail is scanned and forwarded to the mail client (MS Outlook / Thunderbird).
How to configure Fortimail so that SPF, DKIM, DMARC is verified by mail provider, then incoming mail is checked for antivirus and phishing by FortiMail, and finally it is forwarded to mail client (MS Outlook, Thunderbird).
Where to enter the MX record from the mail provider in Fortimail?
Do I need to enter any records in the DNS configuration at the mail provider? If necessary, which ones?
I am counting on your help
Greetings.