[ 
http://issues.apache.org/jira/browse/JAMES-528?page=comments#action_12415823 ] 

Vincenzo Gianferrari Pini commented on JAMES-528:
-------------------------------------------------

The difference between the existing matchers like SenderIsLocal or 
SenderIsRegex and the new IsInWhiteList matcher consists in the fact that the 
latter is not "static" (list hardcoded in config.xml) but "dynamic" (list 
stored in a database), "personal" (per local sender) and optionally grows 
automatically. The mailet that manages the list in the database is 
WhiteListManager.

The following (that can be found both in javadoc and in config.xml) should 
explain more:

         <!-- Whitelist Management -->
         <!-- Manages for each local user a "white list" of remote addresses 
whose messages -->
         <!-- should never be blocked as spam. -->
         <!-- -->
         <!-- If <automaticInsert> is true, it will check, for a local sender, 
if a remote recipient -->
         <!-- is already in the list: if not, it will be automatically 
inserted. -->
         <!-- This is under the interpretation that if a local sender X sends a 
message to a -->
         <!-- remote recipient Y, then later on if a message is sent by Y to X 
it should be -->
         <!-- considered always valid and never blocked; hence Y should be in 
the white list -->
         <!-- of X. -->
         <!-- -->
         <!-- Another mode of operations is when a local sender sends a message 
to <whitelistManagerAddress> -->
         <!-- with one of three specific values in the subject, to -->
         <!-- (i) send back a message displaying a list of the addresses in his 
own list (<displayFlag>); -->
         <!-- (ii) insert some new addresses in his own list (<insertFlag>); -->
         <!-- (iii) remove some addresses from his own list (<removeFlag>). -->
         <!-- In all of the three above cases the message will be ghosted and 
the postmaster will reply -->
         <!-- to the sender. -->
         <!-- -->
         <!-- The sender name is always converted to its primary name (handling 
aliases). -->
         <!--
         <mailet match="SMTPAuthSuccessful" class="WhiteListManager" 
onMailetException="ignore">
            <repositoryPath>db://maildb</repositoryPath>
            <automaticInsert>true</automaticInsert>
            <whitelistManagerAddress>[EMAIL PROTECTED]</whitelistManagerAddress>
            <displayFlag>display</displayFlag>
            <insertFlag>insert</insertFlag>
            <removeFlag>remove</removeFlag>
         </mailet>
         -->


> Add whitelist support
> ---------------------
>
>          Key: JAMES-528
>          URL: http://issues.apache.org/jira/browse/JAMES-528
>      Project: James
>         Type: New Feature

>   Components: Matchers/Mailets (bundled)
>     Versions: 2.3.0b1
>     Reporter: Vincenzo Gianferrari Pini
>     Assignee: Vincenzo Gianferrari Pini
>     Priority: Minor
>      Fix For: 2.3.0b1

>
> Add matcher/mailets providing whitelist support, to reduce false positives in 
> anti-spam detection.

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