We have our emails hosted on OVH.com using their MX plans. It happens that we want to limit the subscriptions/spam/unwanted mails received by our enterprise's mails.
To add OVH premade spam/virus mail filter, you only need to add dedicated MX records (i.e. mx1.ovh.net).
My idea would be to host my own email gateway to do some custom filtering.
MailScanner could provide such feature on top of Postfix. However, I am not sure of how to setup this solution. And how to configure Postfix/MailScanner.
Would you please advice on how to setup this or on alternative solutions ?