+#!/bin/sh
+#
+# Configure a machine without exim installed as a mail server receiving
+# email using SMTP via Tor.
+
+if dpkg -l exim4-config > /dev/null ; then
+ echo "******************************************************************"
+ echo "* Unable to set up SMTP over Tor, exim4-config already installed *"
+ echo "* Purge the package and try again, or *"
+ echo "* run "dpkg-reconfigure exim4-config" to configure manually. *"
+ echo "******************************************************************"
+ exit 1
+fi
+
+torhsdir=$(awk '/^HiddenServiceDir (.*) *$/ { print $2 }' /etc/tor/torrc)
+if [ -e "$torhsdir/hostname" ] ; then
+ torhsname=$(cat "$torhsdir/hostname")
+else
+ echo "*******************************************************************"
+ echo "* Unable to set up SMTP over TOR. There is no Tor hidden service *"
+ echo "* name in $torhsdir *"
+ echo "*******************************************************************"
+ echo "Please add lines like this to /etc/tor/torrc:"
+ echo
+ echo "HiddenServiceDir /var/lib/tor/hidden_service/"
+ echo "HiddenServicePort 25 127.0.0.1:25"
+ exit 1
+fi
+
+cat <<EOF | debconf-set-selections
+exim4-config exim4/dc_eximconfig_configtype select internet site; mail is sent and received directly using SMTP
+exim4-config exim4/dc_local_interfaces string 127.0.0.1 ; ::1
+exim4-config exim4/dc_other_hostnames string $torhsname
+exim4-config exim4/use_split_config boolean true
+EOF
+
+DEBIAN_FRONTEND=noninteractive apt-get install -y exim4