diff --git a/.gitignore b/.gitignore
index 145f9da..26aefbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,7 @@ postfixadmin-*
 /dcc*
 *.log
 *.tar.Z
+crontab-root*
 
 # - Dovecot
 dovecot*
diff --git a/install_amavis.sh b/install_amavis.sh
index 9e8c0cd..9045f68 100755
--- a/install_amavis.sh
+++ b/install_amavis.sh
@@ -75,6 +75,9 @@ echo ""
 script_dir="$(realpath $(dirname $0))"
 conf_file="${script_dir}/conf/install_amavis.conf"
 
+backup_date="$(date +%Y-%m-%d-%H%M)"
+crontab_backup_file="${script_dir}/crontab-root-${backup_date}.install_amavis.lst"
+
 if [[ -f "$conf_file" ]]; then
    source $conf_file
 fi
@@ -793,6 +796,35 @@ if ! $installation_failed ; then
    echo_ok
 fi
 
+## - Temporarily disable crontab for user root
+## -
+
+echononl "   Backup crontab"
+crontab -u root -l > $crontab_backup_file 2> $tmp_err_msg
+if [[ "$?" = "0" ]]; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $tmp_err_msg)"
+fi
+
+echononl "   Disable crontab for user root"
+echo "" >> ${logdir}/main.log
+echo "crontab -r -u root" > $tmp_err_msg
+crontab -r -u root > $tmp_err_msg  2>&1
+if [[ "$?" = "0" ]]; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $tmp_err_msg)"
+fi
+
+
+echo
+echo -e "\033[37m\033[1mInstall AMaViS..\033[m"
+echo
+
+
 ## - Install package amavisd-new NOW, because we need at least the existence
 ## - of the AmaViS user (amavis) befor finally installation and configuration 
 ## - of AmaViS itself.
@@ -934,8 +966,6 @@ echo -e "   \033[37m\033[1mConfigure Razor2..\033[m"
 
 info "Open firewall outgoing port 2703 for Razor2"
 
-_date="$(date +%Y-%m-%d-%H%M)"
-
 ## - This next section gets Razor2 up and running and copies its files where 
 ## - both root and amavis expect to find them. 
 ## -
@@ -973,7 +1003,7 @@ fi
 
 echononl "   Backup directory \"/root/.razor.\""
 if [[ -d /root/.razor ]] ; then
-   mv /root/.razor /root/.razor."${_date}" > $tmp_err_msg 2>&1
+   mv /root/.razor /root/.razor."${backup_date}" > $tmp_err_msg 2>&1
    if [[ $? -eq 0 ]] ; then
       echo_ok
    else
@@ -1035,7 +1065,7 @@ fi
 _home_amavais=$(realpath ~amavis)
 echononl "   Backup directory \"${_home_amavais}/.razor\""
 if [[ -d "${_home_amavais}/.razor" ]] ; then
-   mv ${_home_amavais}/.razor ${_home_amavais}/.razor."${_date}"
+   mv ${_home_amavais}/.razor ${_home_amavais}/.razor."${backup_date}"
    if [[ $? -eq 0 ]] ; then
       echo_ok
    else
@@ -1062,9 +1092,9 @@ if [[ "$?" -ne 0 ]] ; then
 fi
 if ! $installation_failed ; then
    echo_ok
-   if [[ -d "${_home_amavais}/.razor.${_date}" ]] ; then
-      echononl "   Delete previous created backup \"${_home_amavais}/.razor.${_date}\""
-      rm -r "${_home_amavais}/.razor.${_date}" > /dev/null 2>&1
+   if [[ -d "${_home_amavais}/.razor.${backup_date}" ]] ; then
+      echononl "   Delete previous created backup \"${_home_amavais}/.razor.${backup_date}\""
+      rm -r "${_home_amavais}/.razor.${backup_date}" > /dev/null 2>&1
       if [[ $? -eq 0 ]] ; then
          echo_ok
       else
@@ -1072,9 +1102,9 @@ if ! $installation_failed ; then
          error "$(cat $tmp_err_msg)"
       fi
    fi
-   if [[ -d "/root/.razor.${_date}" ]] ; then
-      echononl "   Delete previous created backup \"/root/.razor.${_date}\""
-      rm -r "/root/.razor.${_date}" > /dev/null 2>&1
+   if [[ -d "/root/.razor.${backup_date}" ]] ; then
+      echononl "   Delete previous created backup \"/root/.razor.${backup_date}\""
+      rm -r "/root/.razor.${backup_date}" > /dev/null 2>&1
       if [[ $? -eq 0 ]] ; then
          echo_ok
       else
@@ -1088,40 +1118,59 @@ fi
 ## - Aadd a cronjob for razor2 updates
 ## -
 ## -
-echononl "   add a cronjob for razor2 updates"
-if ! grep -i -E "/usr/bin/razor-admin\s+-discover" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-
-   cat << EOF >> /tmp/tmp_crontab
+echononl "   Add a cronjob for razor2 updates"
+if [[ -f "$crontab_backup_file" ]]; then
+   if ! grep -i -E "/usr/bin/razor-admin\s+-discover" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
 
 # - Update razor2
 # -
 33 0 * * * su amavis -lc '/usr/bin/razor-admin -discover'
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "/usr/bin/razor-admin\s+-discover" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
+
+# - Update razor2
+# -
+33 0 * * * su amavis -lc '/usr/bin/razor-admin -discover'
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 
@@ -1271,40 +1320,62 @@ fi
 ## -
 ## -
 echononl "   Add a cronjob for updating and cleaning up dcc"
-if ! grep -i -E "/var/dcc/libexec/cron-dccd" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
+if [[ -f "$crontab_backup_file" ]]; then
 
-   cat << EOF >> /tmp/tmp_crontab
+   if ! grep -i -E "/var/dcc/libexec/cron-dccd" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
 
 # - Cleaning up dcc (Distributed Checksum Clearinghouses)
 # -
 13 1 * * * /var/dcc/libexec/cron-dccd
 
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "/var/dcc/libexec/cron-dccd" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
+
+# - Cleaning up dcc (Distributed Checksum Clearinghouses)
+# -
+13 1 * * * /var/dcc/libexec/cron-dccd
+
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 _config_file=/var/dcc/dcc_conf
@@ -1382,7 +1453,6 @@ echo -e "   \033[37m\033[1mConfigure Spamassassin..\033[m"
 ## - Backup existing SpamAssassin's main configuration file /etc/spamassassin/local.cf
 ## -
 _config_file=/etc/spamassassin/local.cf
-_date="$(date +%Y-%m-%d-%H%M)"
 if [[ ! -f "${_config_file}.ORIG" ]]; then
    echononl   "   Save installation version of ${_config_file} (Suffix \".ORIF\")"
    cp -a "$_config_file" "${_config_file}.ORIG" > /dev/null 2> $tmp_err_msg
@@ -1394,7 +1464,7 @@ if [[ ! -f "${_config_file}.ORIG" ]]; then
    fi
 else
    echononl   "   Backup $_config_file"
-   cp -a "$_config_file" "${_config_file}.${_date}" 2> $tmp_err_msg
+   cp -a "$_config_file" "${_config_file}.${backup_date}" 2> $tmp_err_msg
    if [[ $? -eq 0 ]] ; then
       echo_ok
    else
@@ -1644,10 +1714,10 @@ if ! $installation_failed ; then
    echo_ok
 fi
 
-if [[ -f "${_config_file}.${_date}" ]]; then
-   if diff "${_config_file}" "${_config_file}.${_date}" ; then
+if [[ -f "${_config_file}.${backup_date}" ]]; then
+   if diff "${_config_file}" "${_config_file}.${backup_date}" > /dev/null 2>&1 ; then
       info "${_config_file} has not changed.\n\t          Removing previos created backup.."
-      rm "${_config_file}.${_date}"
+      rm "${_config_file}.${backup_date}"
    fi
 fi
 
@@ -1655,7 +1725,6 @@ fi
 # - Adjust /etc/spamassassin/v310.pre
 # -
 _config_file=/etc/spamassassin/v310.pre
-_date="$(date +%Y-%m-%d-%H%M)"
 _backup_file=""
 if [[ ! -f "${_config_file}.ORIG" ]]; then
    echononl   "   Save installation version of ${_config_file} (Suffix \".ORIF\")"
@@ -1669,14 +1738,14 @@ if [[ ! -f "${_config_file}.ORIG" ]]; then
    _backup_file="${_config_file}.ORIG"
 else
    echononl   "   Backup $_config_file"
-   cp -a "$_config_file" "${_config_file}.${_date}" 2> $tmp_err_msg
+   cp -a "$_config_file" "${_config_file}.${backup_date}" 2> $tmp_err_msg
    if [[ $? -eq 0 ]] ; then
       echo_ok
    else
       echo_failed
       error "$(cat $tmp_err_msg)"
    fi
-   _backup_file="${_config_file}.${_date}"
+   _backup_file="${_config_file}.${backup_date}"
 fi
 
 installation_failed=false
@@ -1722,7 +1791,6 @@ fi
 # - Adjust /etc/spamassassin/v312.pre
 # -
 _config_file=/etc/spamassassin/v312.pre
-_date="$(date +%Y-%m-%d-%H%M)"
 _backup_file=""
 if [[ ! -f "${_config_file}.ORIG" ]]; then
    echononl   "   Save installation version of ${_config_file} (Suffix \".ORIG\")"
@@ -1736,10 +1804,10 @@ if [[ ! -f "${_config_file}.ORIG" ]]; then
    fi
 else
    echononl   "   Backup $_config_file"
-   cp -a "$_config_file" "${_config_file}.${_date}" 2> $tmp_err_msg
+   cp -a "$_config_file" "${_config_file}.${backup_date}" 2> $tmp_err_msg
    if [[ $? -eq 0 ]] ; then
       echo_ok
-      _backup_file=${_config_file}.${_date}
+      _backup_file=${_config_file}.${backup_date}
    else
       echo_failed
       error "$(cat $tmp_err_msg)"
@@ -1771,7 +1839,6 @@ fi
 # - Adjust /etc/spamassassin/v320.pre
 # -
 _config_file=/etc/spamassassin/v320.pre
-_date="$(date +%Y-%m-%d-%H%M)"
 _backup_file=""
 if [[ ! -f "${_config_file}.ORIG" ]]; then
    echononl   "   Save installation version of ${_config_file} (Suffix \".ORIG\")"
@@ -1785,14 +1852,14 @@ if [[ ! -f "${_config_file}.ORIG" ]]; then
    _backup_file="${_config_file}.ORIG"
 else
    echononl   "   Backup $_config_file"
-   cp -a "$_config_file" "${_config_file}.${_date}" 2> $tmp_err_msg
+   cp -a "$_config_file" "${_config_file}.${backup_date}" 2> $tmp_err_msg
    if [[ $? -eq 0 ]] ; then
       echo_ok
    else
       echo_failed
       error "$(cat $tmp_err_msg)"
    fi
-   _backup_file="${_config_file}.${_date}"
+   _backup_file="${_config_file}.${backup_date}"
 fi
 
 installation_failed=false
@@ -1839,41 +1906,62 @@ fi
 
 # - Add a cronjob for cleaning up bayes
 # -
-echononl "   Add a cronjob for updating clamav (and freshclam) packages"
-if ! grep -i -E "/usr/bin/sa-learn\s+--sync" /var/spool/cron/crontabs/root > /dev/null 2> $tmp_err_msg ; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+echononl "   Add a cronjob for cleaning up bayes"
+if [[ -f "$crontab_backup_file" ]]; then
+
+   if ! grep -i -E "/usr/bin/sa-learn\s+--sync" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
+
+# - Cleanup sa bayes for espired entries
+# -
+33 3 * * * su amavis -lc "/usr/bin/sa-learn --sync >/dev/null" ;  su amavis -lc "/usr/bin/sa-learn --sync --force-expire >/dev/null"
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
 
-   cat << EOF >> /tmp/tmp_crontab
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "/usr/bin/sa-learn\s+--sync" /var/spool/cron/crontabs/root > /dev/null 2> $tmp_err_msg ; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
 
 # - Cleanup sa bayes for espired entries
 # -
 33 3 * * * su amavis -lc "/usr/bin/sa-learn --sync >/dev/null" ;  su amavis -lc "/usr/bin/sa-learn --sync --force-expire >/dev/null"
 
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 # - !! Notice !!
@@ -2154,40 +2242,62 @@ fi
 # - Add a cronjob for spamassassin updates
 # -
 echononl "   Add a cronjob for spamassassin updates"
-if ! grep -i -E "/root/bin/sa-update.sh" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
+if [[ -f "$crontab_backup_file" ]]; then
 
-   cat << EOF >> /tmp/tmp_crontab
+   if ! grep -i -E "/root/bin/sa-update.sh" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
 
 # - Update spamassassin rules
 # -
 33 1 * * * /root/bin/sa-update.sh
 
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "/root/bin/sa-update.sh" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
+
+# - Update spamassassin rules
+# -
+33 1 * * * /root/bin/sa-update.sh
+
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 
@@ -2257,40 +2367,62 @@ fi
 # - Add a cronjob for compiling rules
 # -
 echononl "   Add a cronjob for compiling rules"
-if ! grep -i -E "/root/bin/sa-compile.sh" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
+if [[ -f "$crontab_backup_file" ]]; then
 
-   cat << EOF >> /tmp/tmp_crontab
+   if ! grep -i -E "/root/bin/sa-compile.sh" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
 
 # - Compiling rules (SpamAssassin)
 # -
 53 0 * * * /root/bin/sa-compile.sh
 
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "/root/bin/sa-compile.sh" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
+
+# - Compiling rules (SpamAssassin)
+# -
+53 0 * * * /root/bin/sa-compile.sh
+
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 echononl "   Restart spamassassin"
@@ -2457,40 +2589,62 @@ fi
 ## -
 ## -
 echononl "   Add a cronjob for updating clamav (and freshclam) packages"
-if ! grep -i -E "/usr/bin/apt-get\s+.*clamav-daemon" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
+if [[ -f "$crontab_backup_file" ]]; then
 
-   cat << EOF >> /tmp/tmp_crontab
+   if ! grep -i -E "/usr/bin/apt-get\s+.*clamav-daemon" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
 
 # - Update clamav (and freshclam) software packages
 # -
-03 0 * * *  /usr/bin/apt-get update > /dev/null  ; PATH=/bin:/sbin:/usr/bin:/usr/sbin /usr/bin/apt-get -y install -t stable-updates clamav clamav-base clamav-docs clamav-daemon clamav-freshclam > /dev/null
+03 0 * * *  /usr/bin/apt-get update > /dev/null  ; PATH=/bin:/sbin:/usr/bin:/usr/sbin /usr/bin/apt-get -y install clamav clamav-base clamav-docs clamav-daemon clamav-freshclam > /dev/null
 
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "/usr/bin/apt-get\s+.*clamav-daemon" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
+
+# - Update clamav (and freshclam) software packages
+# -
+03 0 * * *  /usr/bin/apt-get update > /dev/null  ; PATH=/bin:/sbin:/usr/bin:/usr/sbin /usr/bin/apt-get -y install clamav clamav-base clamav-docs clamav-daemon clamav-freshclam > /dev/null
+
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 
@@ -2953,7 +3107,6 @@ fi
 ## -
 
 _config_file=/etc/amavis/conf.d/50-user
-_date="$(date +%Y-%m-%d-%H%M)"
 if [[ ! -f "/etc/amavis/$(basename ${_config_file}).ORIG" ]]; then
    echononl   "   Save installation version of ${_config_file} (Suffix \".ORIF\")"
    cp -a "$_config_file" "/etc/amavis/$(basename ${_config_file}).ORIG" > /dev/null 2> $tmp_err_msg
@@ -2965,7 +3118,7 @@ if [[ ! -f "/etc/amavis/$(basename ${_config_file}).ORIG" ]]; then
    fi
 else
    echononl   "   Backup $_config_file"
-   cp -a "$_config_file" "/etc/amavis/$(basename ${_config_file}).${_date}" 2> $tmp_err_msg
+   cp -a "$_config_file" "/etc/amavis/$(basename ${_config_file}).${backup_date}" 2> $tmp_err_msg
    if [[ $? -eq 0 ]] ; then
       echo_ok
    else
@@ -3307,10 +3460,10 @@ if ! $installation_failed ; then
    echo_ok
 fi
 
-if [[ -f "/etc/amavis/$(basename ${_config_file}).${_date}" ]]; then
-   if diff "${_config_file}" "/etc/amavis/$(basename ${_config_file}).${_date}" > /dev/null 2>&1 ; then
+if [[ -f "/etc/amavis/$(basename ${_config_file}).${backup_date}" ]]; then
+   if diff "${_config_file}" "/etc/amavis/$(basename ${_config_file}).${backup_date}" > /dev/null 2>&1 ; then
       info "${_config_file} has not changed.\n\t          Removing previos created backup.."
-      rm "/etc/amavis/$(basename ${_config_file}).${_date}"
+      rm "/etc/amavis/$(basename ${_config_file}).${backup_date}"
    fi
 fi
 
@@ -3388,15 +3541,10 @@ fi
 ## - Add a crontab to cleanup the quarantine folder
 ## -
 echononl "   Add a cronjob to cleanup the quarantine folder"
-if ! grep -i -E "find\s+${QUARANTINE_DIR}/spam\s+-type\s+f\s+" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
-   installation_failed=false
-   crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
+if [[ -f "$crontab_backup_file" ]]; then
 
-   cat << EOF >> /tmp/tmp_crontab
+   if ! grep -i -E "find\s+${QUARANTINE_DIR}/spam\s+-type\s+f\s+" "$crontab_backup_file" > /dev/null 2>&1; then
+      cat << EOF >> $crontab_backup_file
 
 # - Remove old quarantined messages (>30 days).
 # -
@@ -3411,25 +3559,60 @@ if ! grep -i -E "find\s+${QUARANTINE_DIR}/spam\s+-type\s+f\s+" /var/spool/cron/c
 # - Bad headers
 0 3 * * * find ${QUARANTINE_DIR}/bad-headers -type f -name "badh-*" -mtime +30 -exec rm {} \;
 EOF
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+      if [[ "$?" -ne 0 ]] ; then
+         echo_failed
+      else
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
+
+elif [[ -f "/var/spool/cron/crontabs/root" ]] ; then
+
+   if ! grep -i -E "find\s+${QUARANTINE_DIR}/spam\s+-type\s+f\s+" /var/spool/cron/crontabs/root > /dev/null 2>&1; then
+      installation_failed=false
+      crontab -l > /tmp/tmp_crontab 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+
+      cat << EOF >> /tmp/tmp_crontab
+
+# - Remove old quarantined messages (>30 days).
+# -
+# - Spam
+0 3 * * * find ${QUARANTINE_DIR}/spam -type f -name "spam-*" -mtime +30 -exec rm {} \;
+# - Spammy
+0 3 * * * find ${QUARANTINE_DIR}/spammy -type f -name "spammy-*" -mtime +30 -exec rm {} \;
+# - Virus
+0 3 * * * find ${QUARANTINE_DIR}/virus -type f -name "virus-*" -mtime +30 -exec rm {} \;
+# - Banned files
+0 3 * * * find ${QUARANTINE_DIR}/banned -type f -name "banned-*" -mtime +30 -exec rm {} \;
+# - Bad headers
+0 3 * * * find ${QUARANTINE_DIR}/bad-headers -type f -name "badh-*" -mtime +30 -exec rm {} \;
+EOF
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      crontab /tmp/tmp_crontab > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
+      if [[ "$?" -ne 0 ]] ; then
+         installation_failed=true
+         error "$(cat $tmp_err_msg)"
+      fi
+      if ! $installation_failed ; then
+         echo_ok
+      fi
+   else
+      echo_skipped
    fi
-   rm /tmp/tmp_crontab  > /dev/null 2> $tmp_err_msg
-   if [[ "$?" -ne 0 ]] ; then
-      installation_failed=true
-      error "$(cat $tmp_err_msg)"
-   fi
-   if ! $installation_failed ; then
-      echo_ok
-   fi
-else
-   echo_skipped
 fi
 
 
@@ -3488,10 +3671,9 @@ fi
 ## -       -o receive_override_options=no_unknown_recipient_checks
 ## -
 postfix_master_cf="/etc/postfix/master.cf"
-_date=$(date +%Y-%m-%d-%H%M)
 echo ""
 echononl "   Backup file \"${postfix_master_cf}\""
-cp -a $postfix_master_cf "${postfix_master_cf}.$_date" > /dev/null 2> $tmp_err_msg
+cp -a $postfix_master_cf "${postfix_master_cf}.$backup_date" > /dev/null 2> $tmp_err_msg
 if [[ $? -eq 0 ]] ; then
    echo_ok
 else
@@ -3684,12 +3866,23 @@ EOF
    _found=false
 
    echo "$_line" >> $postfix_master_cf
-done < "${postfix_master_cf}.$_date"
+done < "${postfix_master_cf}.$backup_date"
 
 echo_done
 warn "Please check file \"$postfix_master_cf\" !"
 
 
+echononl "   Reenable previously saved crontab from '$crontab_backup_file'.."
+crontab $crontab_backup_file > $tmp_err_msg 2>&1
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $log_file)"
+fi
+
+
+
 # ---
 # --- Restart Services
 # ---