Docs: add note on daemon shutdown

[user/henk/code/exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 4a6b9bfd06d55e3af6aed79f61b4f40b2345b691..dc4e38c4aa73c129829595c3a131c18e3c58748a 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -2810,6 +2810,14 @@ of Exim is installed. It is not necessary to do this when other files that are
 referenced from the configuration (for example, alias files) are changed,
 because these are reread each time they are used.
 
+.new
+Either a SIGTERM or a SIGINT signal should be used to cause the daemon
+to cleanly shut down.
+Subprocesses handling recceiving or delivering messages,
+or for scanning the queue,
+will not be affected by the termination of the daemon process.
+.wen
+
 .cmdopt -bdf
 This option has the same effect as &%-bd%& except that it never disconnects
 from the controlling terminal, even when no debugging is specified.
@@ -4397,15 +4405,21 @@ It is only relevant when the &%-bd%& (start listening daemon) option is also
 given.
 Normally the daemon creates this socket, unless a &%-oX%& and &*no*& &%-oP%&
 option is also present.
-If this option is given then the socket will not be created.  This could be
-required if the system is running multiple daemons.
+.new
+If this option is given then the socket will not be created.  This is required
+if the system is running multiple daemons, in which case it should
+be used on all.
+The features supported by the socket will not be available in such cases.
 
 The socket is currently used for
 .ilist
 fast ramp-up of queue runner processes
 .next
+caching compiled regexes
+.next
 obtaining a current queue size
 .endlist
+.wen
 
 .cmdopt -pd
 .cindex "Perl" "starting the interpreter"