/etc/ppp/ip-up.d/sendmail is in sendmail-base 8.15.2-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | #!/bin/sh
#
# This script is called when ppp connects to the network.
#
# Here is where we'll start 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
#
# ALSO: make sure ipparam is specified somewhere in the ppp options;
# it will be used as the name of a file in /etc/mail/peers
#
# Define our domain name (from PPP) for sendmail.
# These variables are for the use of the scripts run by run-parts
#PPP_IFACE="$1";
#PPP_TTY="$2";
#PPP_SPEED="$3";
#PPP_LOCAL="$4";
#PPP_REMOTE="$5";
#PPP_IPPARAM="$6";
if [ ! -z "$PPP_LOCAL" ]; then
addr=$PPP_LOCAL;
provider=$PPP_IPPARAM;
iface=$PPP_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
. /usr/share/sendmail/dynamic;
# Note the interface that just changed
update_interface "$iface" "BOUND";
# If the domain name has changed, update the provider information
update_provider "$provider";
# If the ip address has changed, update the host information
update_host "$addr";
# If anything has been changed, update sendmail.cf and reload
update_sendmail "ppp";
exit 0;
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