The IMF Tune machine receives emails relayed by another server. Can we still filter emails by IP?
In this case you may want to consider setting up an SCL Rule for the RFC2822 Received header. For example consider the IP 127.0.0.2. Let’s say you want all emails originating from this IP to be deposited to the Junk Email folder or to be blacklisted. In this case you can setup a mapping specifying that if the Received header contains 127.0.0.2 the SCL is set to 5. Here 5 is an SCL value for which emails are configured to be deposited to the Junk Email folder.
