Our Sophos UTM is setup to block all external emails from "ourdomain.com" (sender blacklist, *@ourdoman.com) in order to block any spoofing attempts. This is now causing a problem as we have an external website that needs to send emails to our internal users from "website@ourdomain.com". Is there any way to allow emails from the website address which is sent via our hosting providers relay whilst still blocking other potential spoof emails? Thanks in advance.
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