No built-in features |
Sender filtering |
Exchange 2000
features plus
connection filtering with RBL support, recipient filtering, authenticated Distribution Groups, content filtering with SCL support (from SP1 onward), SenderID support (from SP2 onward)
|
Exchange 2003
features plus
special message hygiene server role (Edge Transport server), safelist aggregation, Edge Transport rules, automatic spam signature updates, sender reputation and protocol analysis, attachment filtering, content filtering with quarantine capability
|