From d11e1bacc3675d5606d7396bb8ee0052affb2f04 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Mon, 22 Oct 2018 15:01:09 +0200
Subject: [PATCH 1/7] Change .gitignore

---
 .gitignore | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.gitignore b/.gitignore
index 26aefbe..cc8e7d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
 
+!README*
+
 # - common
 *.log
 *.swp

From ccc627932e506189a37932ab642a8f8503f35858 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Mon, 22 Oct 2018 15:03:46 +0200
Subject: [PATCH 2/7] Add Documentation /README files) for dovecot.

---
 .gitignore                                   |   4 +-
 DOC/dovecot/README.dovecot.index             |  12 ++
 DOC/dovecot/README.dovecot.recalculate_quota |  12 ++
 DOC/dovecot/README.dovecot.systemd           |  21 ++++
 DOC/dovecot/lmtp_notice.txt                  | 123 +++++++++++++++++++
 5 files changed, 169 insertions(+), 3 deletions(-)
 create mode 100644 DOC/dovecot/README.dovecot.index
 create mode 100644 DOC/dovecot/README.dovecot.recalculate_quota
 create mode 100644 DOC/dovecot/README.dovecot.systemd
 create mode 100644 DOC/dovecot/lmtp_notice.txt

diff --git a/.gitignore b/.gitignore
index cc8e7d4..35e9223 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,4 @@
 
-!README*
-
 # - common
 *.log
 *.swp
@@ -16,7 +14,7 @@ postfixadmin-*
 crontab-root*
 
 # - Dovecot
-dovecot*
+dovecot-*
 log*
 
 # - roundcube
diff --git a/DOC/dovecot/README.dovecot.index b/DOC/dovecot/README.dovecot.index
new file mode 100644
index 0000000..9efade3
--- /dev/null
+++ b/DOC/dovecot/README.dovecot.index
@@ -0,0 +1,12 @@
+# ----------
+# - Doveadm-Index
+# ----------
+
+# - Index users INBOX:
+# -
+doveadm index -u <user@domain.ltd> INBOX
+
+
+# - Index INBOX for ALL users
+# -
+doveadm index -A
diff --git a/DOC/dovecot/README.dovecot.recalculate_quota b/DOC/dovecot/README.dovecot.recalculate_quota
new file mode 100644
index 0000000..d13fec8
--- /dev/null
+++ b/DOC/dovecot/README.dovecot.recalculate_quota
@@ -0,0 +1,12 @@
+# ----------
+# - Force Dovecot to recalculate mailbox quota
+# ----------
+
+# - Recalculate one mailbox:
+# -
+doveadm quota recalc -u <user@domain.ltd>
+
+
+# - Recalculate ALL mail accounts:
+# -
+doveadm quota recalc -A
diff --git a/DOC/dovecot/README.dovecot.systemd b/DOC/dovecot/README.dovecot.systemd
new file mode 100644
index 0000000..6d2aeaa
--- /dev/null
+++ b/DOC/dovecot/README.dovecot.systemd
@@ -0,0 +1,21 @@
+
+
+Debian Jessie comes with systemd so you really should not use initscript anymore but 
+switch to systemd for starting dovecot. There is systemd service description file available 
+for you in case your vendor does not provide it in the package:
+
+https://github.com/dovecot/core/blob/master/dovecot.service.in
+
+--
+
+> i use ./configure with
+> --with-systemdsystemunitdir=/etc/systemd/system/ and that installs the
+> systemd.service and socket
+
+That's what I missed, thank you a lot. And service seems to handle
+correctly restarts 
+
+Also use:
+   --with-rundir=/var/run/dovecot
+
+--
diff --git a/DOC/dovecot/lmtp_notice.txt b/DOC/dovecot/lmtp_notice.txt
new file mode 100644
index 0000000..1990a45
--- /dev/null
+++ b/DOC/dovecot/lmtp_notice.txt
@@ -0,0 +1,123 @@
+
+
+- to drop cached lmtp adress verification, delete file
+  /var/lib/postfix/verify_cache.db
+
+
+
+mail RCPT TO: test-help@warenform.com
+=====================================
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = substring ('%u' from '#"[^-]+#"_*@%%' for '#') || '@%d'  and active = true
+
+   15-lda.conf: 
+      recipient_delimiter =
+
+   90-sieve.conf:
+      recipient_delimiter =
+
+--> stored mail into mailbox 'INBOX'
+   no "Error:" in dovecot.log
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = substring ('%u' from '#"[^-]+#"_*@%%' for '#') || '@%d'  and active = true
+
+   15-lda.conf: 
+      recipient_delimiter =
+
+   90-sieve.conf:
+      recipient_delimiter = -
+
+--> stored mail into mailbox 'INBOX'
+   no "Error:" in dovecot.log
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = substring ('%u' from '#"[^-]+#"_*@%%' for '#') || '@%d'  and active = true
+
+   15-lda.conf: 
+      recipient_delimiter = -
+
+   90-sieve.conf:
+      recipient_delimiter =
+
+--> stored mail into mailbox 'help'
+   no "Error:" in dovecot.log
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = substring ('%u' from '#"[^-]+#"_*@%%' for '#') || '@%d'  and active = true
+
+   15-lda.conf: 
+      recipient_delimiter = -
+
+   90-sieve.conf:
+      recipient_delimiter = -
+
+--> stored mail into mailbox 'help'
+   no "Error:" in dovecot.log
+
+
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = '%u' and active = true
+
+   15-lda.conf: 
+      recipient_delimiter =
+
+   90-sieve.conf:
+      recipient_delimiter =
+
+--> 550 5.1.1 <test-help@warenform.com> User doesn't exist: ...
+   no "Error:" in dovecot.log
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = '%u' and active = true
+
+   15-lda.conf: 
+      recipient_delimiter =
+
+   90-sieve.conf:
+      recipient_delimiter = -
+
+--> 550 5.1.1 <test-help@warenform.com> User doesn't exist: ...
+   no "Error:" in dovecot.log
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = '%u' and active = true
+
+   15-lda.conf: 
+      recipient_delimiter = -
+
+   90-sieve.conf:
+      recipient_delimiter =
+
+--> stored mail into mailbox 'help'
+   no "Error:" in dovecot.log
+
+configuration:
+
+   sql-connect.conf.ext :
+      user_query = SELECT.. WHERE username = '%u' and active = true
+
+   15-lda.conf: 
+      recipient_delimiter = -
+
+   90-sieve.conf:
+      recipient_delimiter = -
+
+--> stored mail into mailbox 'help'
+   no "Error:" in dovecot.log

From 3412f378241a5251748342ba50bb94628a55009e Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Wed, 24 Oct 2018 14:08:19 +0200
Subject: [PATCH 3/7] Add default values if no configuration file is present or
 value not given.

---
 install_amavis.sh | 128 ++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 118 insertions(+), 10 deletions(-)

diff --git a/install_amavis.sh b/install_amavis.sh
index 2058ec2..f01e4ac 100755
--- a/install_amavis.sh
+++ b/install_amavis.sh
@@ -1,7 +1,13 @@
 #!/usr/bin/env bash
 
-_QUARANTINE_ADMIN='postmaster\@$mydomain'
-QUARANTINE_ADMIN=$_QUARANTINE_ADMIN
+
+script_dir="$(realpath $(dirname $0))"
+script_name="$(basename "$0")"
+conf_file="${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"
+
 
 
 # -------------
@@ -90,6 +96,29 @@ detect_os_1 () {
 }
 
 
+# -------------
+# --- Some default settings
+# -------------
+
+DEFAULT_QUARANTINE_DIR="/var/QUARANTINE"
+DEFAULT_QUARANTINE_ADMIN='postmaster\@$mydomain'
+DEFAULT_DB_IN_USE=false
+
+DEFAULT_INSTALL_CLAMAV_UNOFFICIAL_SIGS=true
+
+DEFAULT_MALWARE_PATROL_IN_USE=true
+DEFAULT_MALWERE_PATROL_FREE=false
+DEFAULT_MP_RECEIPT_NUMBER=106015125438
+
+DEFAULT_SECURITE_INFO_IN_USE=true
+DEFAULT_SI_AUTHORISATION_SIGNATURE_WF=76ed7ca6670dbee497e1a0397a7e178c4caa25888bc26d7327d1eab0195342a4cfa522dcf10382623d57dbc2a79bd37627b9a52def4d4bfe617d26e35405ce3b
+DEFAULT_SI_AUTHORISATION_SIGNATURE_OOPEN=b0b7e94d3fcc8f3b1f128edd5830392361868cf0174723a9924ac25bf8b1b588cb974b50234e1bc1d9839dfe0ca6e1627733d90daf1399347b1046d20c2e3a89
+
+# - This parameter will be not asked, so setting it here
+# -
+QUARANTINE_ADMIN=$DEFAULT_QUARANTINE_ADMIN
+
+
 # - Is this a systemd system?
 # -
 if [[ "X`which systemd`" = "X" ]]; then
@@ -107,17 +136,34 @@ detect_os_1
 
 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
 
+
+
+# -------------
+# --- Set default values for some non existent variables (i.e. no configuration file is present)
+# -------------
+
+if [[ -z "$_HOSTNAME" ]] ; then
+   _HOSTNAME="$(hostname -f)"
+   _HOSTNAME_SHORT="$(hostname)"
+   [[ "$_HOSTNAME" = "$_HOSTNAME_SHORT" ]] && _HOSTNAME=""
+fi
+
+
+[[ -z "$_QUARANTINE_DIR" ]] && _QUARANTINE_DIR="$DEFAULT_QUARANTINE_DIR"
+
+[[ -z "$_DB_IN_USE" ]] && _DB_IN_USE=$DEFAULT_DB_IN_USE
+
+[[ -z "$_INSTALL_CLAMAV_UNOFFICIAL_SIGS" ]] && _INSTALL_CLAMAV_UNOFFICIAL_SIGS=$DEFAULT_INSTALL_CLAMAV_UNOFFICIAL_SIGS
+
+[[ -z "$_MALWARE_PATROL_IN_USE" ]] && _MALWARE_PATROL_IN_USE=$DEFAULT_MALWARE_PATROL_IN_USE
+[[ -z "$_MALWERE_PATROL_FREE" ]] && _MALWERE_PATROL_FREE=$DEFAULT_MALWERE_PATROL_FREE
+
+[[ -z "$_SECURITE_INFO_IN_USE" ]] && _SECURITE_INFO_IN_USE=$DEFAULT_SECURITE_INFO_IN_USE
+
 #clear
 #echo ""
 #echo -e "\033[32m--\033[m"
@@ -190,6 +236,43 @@ else
 fi
 
 
+
+# -------------
+# --- Some further default values depending on Hostname
+# -------------
+
+if [[ -z "$_HOSTNAME" ]] ; then
+   _HOSTNAME="$(hostname -f)"
+   _HOSTNAME_SHORT="$(hostname)"
+   [[ "$_HOSTNAME" = "$_HOSTNAME_SHORT" ]] && _HOSTNAME=""
+fi
+
+
+# - Set default values for ipv4- and ipv6-address
+# -
+if [[ -z $_IPV4 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then
+   _IPV4="$(dig +short "$_HOSTNAME" A)"
+fi
+if [[ -z $_IPV6 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then
+   _IPV6="$(dig +short "$_HOSTNAME" AAAA)"
+fi
+
+# - Set defaul value for securite signature
+# -
+if [[ -z "$_SI_AUTHORISATION_SIGNATURE" ]]; then
+   [[ "$HOSTNAME" =~ warenform.de$ ]] && _SI_AUTHORISATION_SIGNATURE=$DEFAULT_SI_AUTHORISATION_SIGNATURE_WF
+
+   # - For all this take O.OPEN's Signature
+   # -
+   [[ "$HOSTNAME" =~ oopen.de$ ]] && _SI_AUTHORISATION_SIGNATURE=$DEFAULT_SI_AUTHORISATION_SIGNATURE_OOPEN
+   [[ "$HOSTNAME" =~ cadus.org$ ]] && _SI_AUTHORISATION_SIGNATURE=$DEFAULT_SI_AUTHORISATION_SIGNATURE_OOPEN
+   [[ "$HOSTNAME" =~ so36.net$ ]] && _SI_AUTHORISATION_SIGNATURE=$DEFAULT_SI_AUTHORISATION_SIGNATURE_OOPEN
+   [[ "$HOSTNAME" =~ interventionistische-linke.org$ ]] && _SI_AUTHORISATION_SIGNATURE=$DEFAULT_SI_AUTHORISATION_SIGNATURE_OOPEN
+
+fi
+
+
+
 IPV4=
 echo ""
 echo -e "\033[32m--\033[m"
@@ -404,6 +487,11 @@ if $INSTALL_CLAMAV_UNOFFICIAL_SIGS ; then
          MALWERE_PATROL_FREE=false
       fi
 
+      # - Set default Value for Malware Patrol serial number (if non free account in use)
+      # -
+      if ! $MALWERE_PATROL_FREE ; then
+         [[ -z "$_MP_RECEIPT_NUMBER" ]] && _MP_RECEIPT_NUMBER="$DEFAULT_MP_RECEIPT_NUMBER"
+      fi
 
       echo ""
       echo -e "\033[32m--\033[m"
@@ -730,7 +818,7 @@ echo ""
 echononl "   Save Configuration"
 cat << EOF > $conf_file
 # ---
-# - Parametersettins postfix bases system
+# - Parametersettings for installscript $script_name
 # ---
 
 _HOSTNAME=$HOSTNAME
@@ -748,11 +836,31 @@ _DB_USER=$DB_USER
 _DB_PASS=$DB_PASS
 _INSTALL_CLAMAV_UNOFFICIAL_SIGS=$INSTALL_CLAMAV_UNOFFICIAL_SIGS
 _MALWARE_PATROL_IN_USE=$MALWARE_PATROL_IN_USE
+EOF
+if $MALWARE_PATROL_IN_USE ; then
+   cat << EOF >> $conf_file
 _MALWERE_PATROL_FREE=$MALWERE_PATROL_FREE
 _MP_RECEIPT_NUMBER=$MP_RECEIPT_NUMBER
+EOF
+else
+   cat << EOF >> $conf_file
+_MALWERE_PATROL_FREE=
+_MP_RECEIPT_NUMBER=
+EOF
+fi
+if $SECURITE_INFO_IN_USE ; then
+    cat << EOF >> $conf_file
 _SECURITE_INFO_IN_USE=$SECURITE_INFO_IN_USE
 _SI_AUTHORISATION_SIGNATURE=$SI_AUTHORISATION_SIGNATURE
+
 EOF
+else
+    cat << EOF >> $conf_file
+_SECURITE_INFO_IN_USE=$SECURITE_INFO_IN_USE
+_SI_AUTHORISATION_SIGNATURE=
+
+EOF
+fi
 if [[ $? -eq 0 ]] ; then
    echo_ok
 else

From 1aec32d68c45745c576cdd2325c2eedfae74085e Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Wed, 24 Oct 2018 14:09:27 +0200
Subject: [PATCH 4/7] Get rid of unused (commented) code.

---
 install_amavis.sh | 43 -------------------------------------------
 1 file changed, 43 deletions(-)

diff --git a/install_amavis.sh b/install_amavis.sh
index f01e4ac..29076ad 100755
--- a/install_amavis.sh
+++ b/install_amavis.sh
@@ -164,49 +164,6 @@ fi
 
 [[ -z "$_SECURITE_INFO_IN_USE" ]] && _SECURITE_INFO_IN_USE=$DEFAULT_SECURITE_INFO_IN_USE
 
-#clear
-#echo ""
-#echo -e "\033[32m--\033[m"
-#echo ""
-#echononl "Run with Install Script with previous settings (yes/no): "
-#read OK
-#OK=${OK,,}
-#if [[ "X$OK" = "X" ]] ; then
-#   OK=yes
-#fi
-#while [ "X$OK" != "Xyes" -a "X$OK" != "Xno" ]; do
-#   echononl "Wrong entry! [yes/no]: "
-#   read OK
-#   OK=${OK,,}
-#done
-#[[ $OK = yes ]] && skip_interactive_use=true
-#
-#if $skip_interactive_use ; then
-#
-#HOSTNAME=$_HOSTNAME
-#IPV4=$_IPV4
-#IPV6=$_IPV6
-#
-#QUARANTINE_DIR=$_QUARANTINE_DIR
-#QUARANTINE_ADMIN=$_QUARANTINE_ADMIN
-#
-#DB_IN_USE=$_DB_IN_USE
-#DB_TYPE=$_DB_TYPE
-#DB_HOST=$_DB_HOST
-#DB_NAME=$_DB_NAME
-#DB_USER=$_DB_USER
-#DB_PASS=$_DB_PASS
-#INSTALL_CLAMAV_UNOFFICIAL_SIGS=$_INSTALL_CLAMAV_UNOFFICIAL_SIGS
-#MALWARE_PATROL_IN_USE=$_MALWARE_PATROL_IN_USE
-#MALWERE_PATROL_FREE=$_MALWERE_PATROL_FREE
-#MP_RECEIPT_NUMBER=$_MP_RECEIPT_NUMBER
-#SECURITE_INFO_IN_USE=$_SECURITE_INFO_IN_USE
-#SI_AUTHORISATION_SIGNATURE=$_SI_AUTHORISATION_SIGNATURE
-#
-#else
-#clear
-#echo -e "\033[21G\033[32mInstallation script for AMaViS, Spamassassin and ClamAV\033[m"
-#echo
 
 clear
 echo -e "\033[21G\033[32mInstallation script for AMaViS, Spamassassin and ClamAV\033[m"

From d8545aa36d39ef40ccdc72c326cb09b56b51ddc4 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Wed, 24 Oct 2018 14:17:18 +0200
Subject: [PATCH 5/7] Get rid of further double code.

---
 install_amavis.sh | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/install_amavis.sh b/install_amavis.sh
index 29076ad..cfb3efa 100755
--- a/install_amavis.sh
+++ b/install_amavis.sh
@@ -198,13 +198,6 @@ fi
 # --- Some further default values depending on Hostname
 # -------------
 
-if [[ -z "$_HOSTNAME" ]] ; then
-   _HOSTNAME="$(hostname -f)"
-   _HOSTNAME_SHORT="$(hostname)"
-   [[ "$_HOSTNAME" = "$_HOSTNAME_SHORT" ]] && _HOSTNAME=""
-fi
-
-
 # - Set default values for ipv4- and ipv6-address
 # -
 if [[ -z $_IPV4 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then

From 6e8e46af9815b16de7def30bfa31695540495419 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Wed, 24 Oct 2018 14:29:01 +0200
Subject: [PATCH 6/7] install_postfix_advanced.sh: add default values if no
 configuration file is present or some values not given.

---
 install_postfix_advanced.sh | 38 +++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/install_postfix_advanced.sh b/install_postfix_advanced.sh
index 70b2517..ee45fdf 100755
--- a/install_postfix_advanced.sh
+++ b/install_postfix_advanced.sh
@@ -82,6 +82,13 @@ echo_skipped() {
 trap clean_up SIGHUP SIGINT SIGTERM
 
 
+# -------------
+# --- Some default settings
+# -------------
+
+DEFAULT_ADMIN_EMAIL="argus@oopen.de"
+
+
 # - Is this a systemd system?
 # -
 if [[ "X`which systemd`" = "X" ]]; then
@@ -102,6 +109,21 @@ if [[ -f "$conf_file" ]]; then
    source $conf_file
 fi
 
+[[ -z "$_ADMIN_EMAIL" ]] && _ADMIN_EMAIL="$DEFAULT_ADMIN_EMAIL"
+
+
+
+# -------------
+# --- Set default values for some non existent variables (i.e. no configuration file is present)
+# -------------
+
+if [[ -z "$_HOSTNAME" ]] ; then
+   _HOSTNAME="$(hostname -f)"
+   _HOSTNAME_SHORT="$(hostname)"
+   [[ "$_HOSTNAME" = "$_HOSTNAME_SHORT" ]] && _HOSTNAME=""
+fi
+
+
 clear
 echo -e "\033[21G\033[32mInstallation script for Postfix basic mailsystem \033[m"
 echo
@@ -128,6 +150,22 @@ else
    done
 fi
 
+
+
+# -------------
+# --- Some further default values depending on Hostname
+# -------------
+
+# - Set default values for ipv4- and ipv6-address
+# -
+if [[ -z $_IPV4 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then
+   _IPV4="$(dig +short "$_HOSTNAME" A)"
+fi
+if [[ -z $_IPV6 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then
+   _IPV6="$(dig +short "$_HOSTNAME" AAAA)"
+fi
+
+
 IPV4=
 echo ""
 echo -e "\033[32m--\033[m"

From 408ac305925ae6a2270e0b764b3b8b3855e0c79e Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Thu, 25 Oct 2018 01:10:56 +0200
Subject: [PATCH 7/7] install_postfix_base.sh: add default values if
 configuration file is not present or some values not set.

---
 install_postfix_base.sh | 86 +++++++++++++++++++++++++++++++----------
 1 file changed, 65 insertions(+), 21 deletions(-)

diff --git a/install_postfix_base.sh b/install_postfix_base.sh
index b68ec97..41436b8 100755
--- a/install_postfix_base.sh
+++ b/install_postfix_base.sh
@@ -1,27 +1,15 @@
 #!/usr/bin/env bash
 
+script_dir="$(dirname $(realpath $0))"
+script_name="$(basename "$0")"
+
+conf_dir=$(dirname $0)/conf
+conf_file="${conf_dir}/install_postfix_base.conf"
+
 _TLS_CERT_DIR=/etc/postfix/ssl
 _TLS_CERT_FILE="${_TLS_CERT_DIR}/mailserver.crt"
 _TLS_KEY_FILE="${_TLS_CERT_DIR}/mailserver.key"
-#
 _TLS_CA_FILE=/etc/ssl/certs/ca-certificates.crt
-#
-#
-#_HOSTNAME=o15.oopen.de
-#_IPV4=83.223.86.96
-#_EXT_IF_IP=83.223.86.96
-#
-### - Leave empty, if no IPv6 should be supported
-### -
-#_IPV6=2a01:30:0:13:5054:ff:fe09:2318
-##_IPV6=
-#
-#_ADMIN_EMAIL=admin@oopen.de
-#
-#_SASL_AUTH=false
-#_RELAY_HOST=b.mx.oopen.de
-#_SASL_USER=anw-urb
-#_SASL_PASS='OhPie2aethei'
 
 
 # -------------
@@ -81,6 +69,15 @@ echo_skipped() {
 }
 
 
+# -------------
+# --- Some default settings
+# -------------
+
+DEFAULT_ADMIN_EMAIL="argus@oopen.de"
+DEFAULT_RELAY_HOST="b.mx.oopen.de"
+DEFAULT_SASL_AUTH=false
+
+
 # - Is this a systemd system?
 # -
 if [[ "X`which systemd`" = "X" ]]; then
@@ -91,13 +88,27 @@ fi
 
 echo ""
 
-conf_dir=$(dirname $0)/conf
-conf_file="${conf_dir}/install_postfix_base.conf"
-
+# - Read Configuration File if exists
+# -
 if [[ -f "$conf_file" ]]; then
    source $conf_file
 fi
 
+
+# -------------
+# --- Set default values for some non existent variables (i.e. no configuration file is present)
+# -------------
+
+[[ -z "$_ADMIN_EMAIL" ]] && _ADMIN_EMAIL="$DEFAULT_ADMIN_EMAIL"
+[[ -z "$_SASL_AUTH" ]] && _SASL_AUTH="$DEFAULT_SASL_AUTH"
+
+if [[ -z "$_HOSTNAME" ]] ; then
+   _HOSTNAME="$(hostname -f)"
+   _HOSTNAME_SHORT="$(hostname)"
+   [[ "$_HOSTNAME" = "$_HOSTNAME_SHORT" ]] && _HOSTNAME=""
+fi
+
+
 clear
 echo -e "\033[21G\033[32mInstallation script for Postfix basic mailsystem \033[m"
 echo
@@ -124,6 +135,24 @@ else
    done
 fi
 
+
+# -------------
+# --- Some further default values depending on Hostname
+# -------------
+
+# - Set default values for ipv4- and ipv6-address
+# -
+if [[ -z $_IPV4 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then
+   _IPV4="$(dig +short "$_HOSTNAME" A)"
+fi
+if [[ -z $_IPV6 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then
+   _IPV6="$(dig +short "$_HOSTNAME" AAAA)"
+fi
+if [[ -z $_IPV6 ]]; then
+	_IPV6=None
+fi
+
+
 IPV4=
 echo ""
 echo -e "\033[32m--\033[m"
@@ -239,6 +268,21 @@ else
       fi
    done
 fi
+
+
+# -------------
+# --- Some further default values depending on sasl authentification
+# -------------
+
+# - Set default value for relay host if sasl authentification should be
+# - supported and value for _RELAY_HOST not given
+# -
+if [[ "$SASL_AUTH" = "yes" ]] || $SASL_AUTH ; then
+   [[ -z "$_RELAY_HOST" ]] && _RELAY_HOST="$DEFAULT_RELAY_HOST"
+fi
+
+
+
 if [[ "$SASL_AUTH" = "yes" ]] || $SASL_AUTH ; then
    SASL_AUTH=true