Is there a way to configure postfix to disable_dns_lookups per connecting/trusted client?
Edit I have an application server that I trust, which is sending me email. It sets the From, as a customer's email. However, if the customer's DNS is not working, my email server rejects the message because it can't find the IP for the email, although it was actually generated by the app server.
I simply want to turn off the DNS checks for email coming from the app server.
No there is no way. And it doesn't make sense. Why would you even want to turn that off? Spam filtering is impacted by disabling it.