Mail Handlers

Handler is an executable file which is invoked at selected points (called hooking points).

Mail handlers are used to handle incoming, outgoing, and pass-through mail at various stages of processing by the Mail Transfer Agent (MTA). One or more handlers can be applied to a message.

Note: Every handler you use should be registered with the mail_handlers_control utility. For details, refer to the Managing Handlers section.

In this chapter:

Hooking Points

Handler Calling Conventions

Managing Handlers

Implementation Notes