File PreparePostfix of Package jsj-installtools

#!/bin/bash
if [ $# -lt 1 ] || [ $# -gt 2 ]; then
  echo usage: $0 hostname [config]
  echo   config: jsj '(default)'
  echo           hsbhv
  echo           hsb
  exit
fi
VAR=$2
if [ $VAR"_" = _ ]; then
  VAR=jsj
fi
case $VAR in
  jsj)          DOMAIN=botter.cc; RELAY=router.botter.cc; ROOTMAIL=root@botter.cc;;
  hsbhv)        DOMAIN=hs-bremerhaven.de; RELAY=smtp.hs-bremerhaven.de; ROOTMAIL=sbotter@hs-bremerhaven.de;;
  hsb)          DOMAIN=fbw.hs-bremen.de; RELAY=mail.hs-bremen.de; ROOTMAIL=zfr-fk1@hs-bremen.de;;
  bb)           DOMAIN=srv.bremische-buergerschaft.de; RELAY=router.botter.cc; ROOTMAIL=root@botter.cc;;
  *)            echo Variante $VAR nicht vorgesehen, bitte prüfen!; exit;;
esac
. /usr/share/jsjinstalltools/GetVersion
HOSTNAME=$1
if [ ${VERSION_ID/./} -ge 130 ]; then
  echo $HOSTNAME".site" > /etc/HOSTNAME
fi
cp /etc/postfix/main.cf /etc/postfix/main.cf.orig
POSTCONF=$(mktemp /tmp/main.cf.XXXXXXXXXX)
postconf -n | \
  sed -e "s/$myhostname = $.*$/\1$HOSTNAME.$DOMAIN/" \
    -e "s/$relayhost =$.*$/\1 $RELAY/" \
    > $POSTCONF
mv $POSTCONF /etc/postfix/main.cf
chmod 644 /etc/postfix/main.cf
ALIASES=$(mktemp /tmp/aliases.XXXXXXXXXX)
sed -e '/^root:/ d' -e "/^#root:/ a root:	$ROOTMAIL" < /etc/aliases > $ALIASES
mv /etc/aliases /etc/aliases.orig
mv $ALIASES /etc/aliases
chmod 644 /etc/aliases
newaliases
if [ ${VERSION_ID/./} -ge 120 ]; then
  systemctl restart postfix.service
  systemctl enable postfix.service
else
  rcpostfix restart
  insserv postfix
fi