File: //etc/network/if-post-down.d/sendmail
#!/bin/sh
#
# This script is called when a network device goes down.
#
# Here is where we'll stop sendmail if needed
#
# Written By Richard Nelson <cowboy@debian.org>
#
# NOTE: The following lines (without the #) must be in /etc/mail/sendmail.mc:
# include(`/etc/mail/dialup.m4')dnl
# include(`/etc/mail/provider.m4')dnl
#
# These variables are for the use of the scripts run by run-parts
#IFACE=;
#IF_ADDRESS=;
#IF_PROVIDER=;
if [ ! -z "$IFACE" ]; then
addr=$IF_ADDRESS;
provider=$IF_PROVIDER;
iface=$IFACE;
else
addr=$1;
provider=$2;
iface=$3;
fi;
if [ -z "$provider" ]; then
exit 0;
fi;
# Bring in some script functions to handle dynamic configuration
test -r /usr/share/sendmail/dynamic || exit 0
. /usr/share/sendmail/dynamic;
# Note the interface that just changed
update_interface "$iface" "STOP";
# If anything has been changed, update sendmail.cf and reload
update_sendmail "ifupdown";
exit 0;