Connection access control

Messaging Server uses two mechanisms for controlling client access. One mechanism is for access to MTA Dispatcher based services such as the SMTP server; see Mail filtering and access control. The second mechanism is for access to Message Store  servers such as the POP, IMAP, and MSHTTP servers, as well as the MMP and proxy servers;  this mechanism uses the  TCP wrappers approach.

See also:
 * Mail filtering and access control
 * Client access to Message Store servers
 * TCP wrappers