Symantec 10744983 Administration Guide - Page 84

84 Configuring email filtering Creating groups and adding members ■ Administrator-defined, domain-based Blocked Senders List ■ Spam attack ■ Directory harvest attack ■ Safe Senders List (part of the Sender Reputation Service) ■ Open Proxy Senders (part of the Sender Reputation Service) ■ Third Party Services Allowed Senders List ■ Third Party Services Blocked Senders List ■ Content Compliance policies ■ Dropped invalid recipient ■ Spam ■ Blocked language ■ Suspected spam ■ Suspected Spammers (part of the Sender Reputation Service) ■ Sender authentication failure Note that end user-defined allow/blocked lists have precedence over all other lists. This may affect your decision regarding whether to enable end user preferences. Also, lists that you create have precedence over lists created by Symantec. However, third party DNS blacklists do not have priority over all Symantec lists. In the event of a conflict between Open Proxy Senders and an entry from a DNS blacklist, Open Proxy Senders will "win." Creating groups and adding members Group policies are configurable message management options for an unlimited number of user groups which you define. Policies collect the spam, virus, and content filtering verdicts and actions for a group. Add or remove members from a group You can specify groups of users based on email addresses, domain names, or LDAP groups. For each group, you can specify email filtering actions for different categories of email.