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…

In the last 3 years, Spammer found many different way to bypass spam filters on any vendor. Users receive email from ADS website (newsletter) where they never subscribed for. I can confirm it. I have a mailbox on a customer site and I used it to subscribe…

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…