- mail from machines that appear within the MAPS RBL list, and also
- checks hosts in the ORBS lists but only marking each message has
- coming via an RBLed host rather than rejecting them. Additionally
- all mail to the local postmaster always gets through, even if the
- host is in the MAPS RBL list. You also have a local private set
- of IPs which relay out through this mail server on net
- 192.168.0.0/24 - these cannot be contacted from outside your
- organisation so RBL is not an issue.</p>
+ mail from machines that appear within either the MAPS RBL list or
+ the MAPS DUL (Dial-Up List), and also checks hosts in the ORBS
+ lists but only marking each message has coming via an RBLed host
+ rather than rejecting them. Additionally all mail to the local
+ postmaster always gets through, even if the host is in the MAPS
+ RBL list. You also have a local private set of IPs which relay
+ out through this mail server on net 192.168.0.0/24 - these cannot
+ be contacted from outside your organisation so RBL is not an
+ issue.</p>