Distributed James Server — DropLists

The DropList, also known as the mail blacklist, is a collection of domains and email addresses that are denied from sending emails within the system. It is disabled by default. To enable it, modify the droplists.properties file and include the IsInDropList matcher in the mailetcontainer.xml. To disable it, adjust the droplists.properties file and remove the IsInDropList matcher from the mailetcontainer.xml.

Table 1. droplists.properties content
Property name	explanation
enabled	Boolean. Governs whether DropLists should be enabled. Defaults to `false`.

Enabling Matcher

Plug the IsInDropList matcher within mailetcontainer.xml :

<mailet match="org.apache.james.transport.matchers.IsInDropList" class="ToProcessor">
    <processor>transport</processor>
</mailet>

DropList management

DropList management, including adding and deleting entries, is performed through the WebAdmin REST API or CLI.

See WebAdmin DropLists. See CLI DropLists.