Hello, I am evaluating Sophos Email Appliance and I noticed some behavior that is really annoying. I receive a complaint that a spam was received and when I checked the sender's domain I discovered that there is no MX record what so ever for that…

Is anyone know how Sophos Email Appliance v4.1.1.0 can filter RDNS to quarantine or reject if require when the record is wrong. I cannot find any option in Email Appliance that can filter RDNS, like SPF or DKIM. I also try from HEADER Attribute [Policy…