sendmail, 4th Edition

Milter smfi_main()

Run the Milter All sendmail versions

The smfi_main() routine starts Milter running and, if you have not already called the smfi_opensocket() routine (Milter smfi_opensocket() on page 1193), establishes the listening socket. The smfi_main() routine takes no argument and is called like this:

ret = smfi_main();

Here, the returned integer value ret will contain either MI_FAILURE if the Milter failed to start, or MI_SUCCESS if the Milter ran and exited normally. A Milter can fail to start up because it could not establish a listening socket, or because of a system or memory error. Usually, failure to start is logged with syslog().

Note that smfi_main() does not put your program into the background to run as a daemon. You need to write that code yourself.

The clean way to shut down your Milter is by calling the smfi_stop() routine (Milter smfi_stop() on page 1202).