agent
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... email server generally consists of two parts: a
receiving/sending agent and a processing agent. Since email is
...
... receiving/sending agent and a processing agent. Since email is
delivered to all users, and is usually private, the processing agent ...
... agent. Since email is
delivered to all users, and is usually private, the processing agent
typically requires system (root) privileges ...
... email implementations perform both portions of the service,
which means the receiving agent also has system privileges. This
opens several security holes ...
... security holes which this document will not describe.
There are some implementations available which allow a separation of
the two agents. Such implementations are generally considered more
secure, but still require careful installation to avoid creating a
security problem ...