Question Receive emails from a specific list of IP's

[Robert S Tucker]

Hi, I use spamhero.com to filter incoming emails. They have a list of IP's that they forward incoming email from to my plesk server. How can I add these IP's to my Plesk incoming mail service so that only email coming from this service will be allowed in?

NB: This is not whitelisting an IP to RECIVE emails SENT from a plesk server: How to whitelist an IP address in Plesk mail server

This is whitelisting an IP (or several IP addresses) of a server SENDING emails TO Plesk.

 

[Robert S Tucker]

Ok. I reread the link above (which I thought was NOT the answer), and of course it IS AN answer, but not the right one. this will filter all senders including mail clients which is not what I want.

appears if I add IP filtering I need to add every IP for every mail client.