Sendmail 8.13.3 Programmer's Guide: HP-UX 11i v1 and HP-UX 11i v2 > Chapter 3 Control Flow of Milter APIs

Signal Handling

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The Milter library, libmilter.a, manages signal handling, and the signals do not directly influence filter applications.

Sendmail 8.13.3 includes the following signal handlers:

Stop - Specifies that new connections from the MTA are not accepted but existing connections are allowed to continue.
Abort - Specifies that all filter applications will be stopped after the next communication with Sendmail happens.