The sendmail program can run in two connection
modes: as a daemon, accepting connections; or as a client, making
connections. Each mode can connect to a port to do its work. The
options for the client port are set by the
ClientPortOptions option (ClientPortOptions). The options for the daemon are set by this
DaemonPortOptions option is used to customize
the daemon’s SMTP service. The form for this option
is as follows:
O DaemonPortOptions=pair,pair,pair ← configuration file (V8.7 and later) -ODaemonPortOptions=pair,pair,pair ← command line (V8.7 and later) define(`confDAEMON_OPTIONS',``pair,pair,pair'') ← mc configuration (V8.7 and later) DAEMON_OPTIONS(``pair,pair,pair'') ← mc configuration (V8.11 and later) OOpair,pair,pair ← configuration file (deprecated) -oOpair,pair,pair← command line (deprecated)
DaemonPortOptions option is set to a
comma-separated list of pairs, where each pair is of the form:
Nine keys are available. Prior to V8.7 they were case-sensitive and an unknown key was silently ignored. With V8.8 and later, an unknown key is still ignored but now causes the following error to be printed:
DaemonPortOptions unknown parameter "key"
Beginning with V8.10, you can declare multiple
DaemonPortOptions options, where each causes the
single listening daemon to accept connections over multiple sockets.
The list of all currently defined keys is shown in Table 24-14.