diff --git a/seqs/matrix.cfg.example b/seqs/matrix.cfg.example
new file mode 100644
index 0000000..7dc6c91
--- /dev/null
+++ b/seqs/matrix.cfg.example
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+MATRIX_HOME="/opt/synapse"
+MATRIX_DOMAIN="matrix.example.com"
diff --git a/seqs/matrix.sh b/seqs/matrix.sh
index 0666851..66b5645 100755
--- a/seqs/matrix.sh
+++ b/seqs/matrix.sh
@@ -2,12 +2,12 @@
 
 toolName=synapse
 toolDeps="build-essential python3-dev libffi-dev python3-pip python3-setuptools postgresql libssl-dev virtualenv libjpeg-dev libxslt1-dev libpq5 libpq-dev"
-toolDir="/opt/synapse"
-toolConfig="${toolDir}/homeserver.yaml"
 toolUser="synapse"
 toolGroup="synapse"
-toolDomain="matrix.winklerfamilie.eu"
-toolUrl="https://$toolDomain"
+
+# Filled by configuration
+toolConfig=
+toolUrl=
 
 # Needed for different steps
 postgresDb=""
@@ -18,18 +18,20 @@ postgresPass=""
 # (when called from a different directory)
 WDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >>/dev/null 2>&1 && pwd )"
 CONFIG=0
-#CONFIG_FILE_NAME="${toolName}.cfg"
-#CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"
+CONFIG_FILE_NAME="matrix.cfg"
+CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"
 
-#step_config() {
-  ## e.g. to source a config file manually:
-  #. "$CONFIG_FILE"
-  ## or to use sequencer api:
-  #initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
-  #if [ $? -eq 0 ] ; then
-  #  CONFIG=1
-  #fi
-#}
+step_config() {
+  initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
+  if [ $? -eq 0 ] ; then
+    CONFIG=1
+    toolConfig="${MATRIX_HOME}/homeserver.yaml"
+    toolUrl="https://$MATRIX_DOMAIN"
+    localHome="$MATRIX_HOME"
+    echo "     $toolName   home: $MATRIX_HOME"
+    echo "     $toolName domain: $MATRIX_DOMAIN"
+  fi
+}
 
 step_1_info() { echo "Installing $toolName dependencies"; }
 step_1_alias() { ALIAS="install"; }
@@ -62,29 +64,29 @@ step_2() {
 step_3_info() { echo "Create $toolName user and group"; }
 step_3() {
   exe addgroup "$toolGroup"
-  exe adduser --system --home ${toolDir}/ --no-create-home --disabled-password --shell /bin/nologin --ingroup "$toolGroup" "$toolUser"
+  exe adduser --system --home ${MATRIX_HOME}/ --no-create-home --disabled-password --shell /bin/nologin --ingroup "$toolGroup" "$toolUser"
 }
 
 step_4_info() { echo "Install $toolName"; }
 step_4() {
-  exe mkdir -p "$toolDir"
-  exe virtualenv -p python3 "${toolDir}/env"
-  exe cd "$toolDir"
-  exe source "${toolDir}/env/bin/activate"
+  exe mkdir -p "$MATRIX_HOME"
+  exe virtualenv -p python3 "${MATRIX_HOME}/env"
+  exe cd "$MATRIX_HOME"
+  exe source "${MATRIX_HOME}/env/bin/activate"
   exe pip install --upgrade pip
   exe pip install --upgrade setuptools
   exe pip install matrix-synapse[postgres]
   
   # Create default configuration
-  exe python3 -m synapse.app.homeserver --server-name "$toolDomain" --config-path homeserver.yaml --generate-config --report-stats=no
+  exe python3 -m synapse.app.homeserver --server-name "$MATRIX_DOMAIN" --config-path homeserver.yaml --generate-config --report-stats=no
   exe deactivate
 
   # Create media directories
-  exe mkdir -p ${toolDir}/media_store ${toolDir}/uploads
-  exe chmod 770 "${toolDir}/media_store" "${toolDir}/uploads"
+  exe mkdir -p ${MATRIX_HOME}/media_store ${MATRIX_HOME}/uploads
+  exe chmod 770 "${MATRIX_HOME}/media_store" "${MATRIX_HOME}/uploads"
   # Allow matrix to write its logs in /opt/synapse
-  exe chmod 755 "${toolDir}"
-  exe chown ${toolUser}:${toolGroup} "${toolDir}" "${toolDir}/media_store" "${toolDir}/uploads"
+  exe chmod 755 "${MATRIX_HOME}"
+  exe chown ${toolUser}:${toolGroup} "${MATRIX_HOME}" "${MATRIX_HOME}/media_store" "${MATRIX_HOME}/uploads"
 }
 
 step_5_info() { echo "Configure $toolName"; }
@@ -94,10 +96,12 @@ step_5() {
 
 step_6_info() { echo "Create $toolName systemd service"; }
 step_6() {
-  addConf -c "$toolService" "$toolServiceLoc"
+  # eval needed to expand sourced configuration variables
+  local localService=`eval "echo \"$toolService\""`
+  addConf -c "$localService" "$toolServiceLoc"
   exe systemctl daemon-reload
   exe systemctl enable matrix-synapse.service
-  exe service matrix-synapse.service start
+  exe service matrix-synapse start
 }
 toolServiceLoc="/etc/systemd/system/matrix-synapse.service"
 toolService="[Unit]
@@ -106,12 +110,12 @@ After=network.target postgresql.service
 
 [Service]
 Type=forking
-WorkingDirectory=${toolDir}/
-ExecStart=${toolDir}/env/bin/synctl start
-ExecStop=${toolDir}/env/bin/synctl stop
-ExecReload=${toolDir}/env/bin/synctl restart
-User=${toolUser}
-Group=${toolGroup}
+WorkingDirectory=\${MATRIX_HOME}/
+ExecStart=\${MATRIX_HOME}/env/bin/synctl start
+ExecStop=\${MATRIX_HOME}/env/bin/synctl stop
+ExecReload=\${MATRIX_HOME}/env/bin/synctl restart
+User=\${toolUser}
+Group=\${toolGroup}
 Restart=always
 StandardOutput=syslog
 StandardError=syslog
@@ -120,11 +124,11 @@ SyslogIdentifier=synapse
 [Install]
 WantedBy=multi-user.target"
 
-step_10_info() { echo "Upgrade $toolName installation at $toolDir"; }
+step_10_info() { echo "Upgrade $toolName installation at $MATRIX_HOME"; }
 step_10_alias() { ALIAS="upgrade"; }
 step_10() {
   echo " [I] Upgrading $toolName"
-  exe source "${toolDir}/env/bin/activate"
+  exe source "${MATRIX_HOME}/env/bin/activate"
   exe pip install --upgrade pip
   exe pip install --upgrade matrix-synapse
   saveReturn $?
@@ -158,7 +162,7 @@ step_14() {
 step_16_info() { echo "Create new user"; }
 step_16_alias() { ALIAS="newuser"; }
 step_16() {
-  exe /opt/synapse/env/bin/register_new_matrix_user -c "$toolDir/homeserver.yaml" $toolUrl
+  exe /opt/synapse/env/bin/register_new_matrix_user -c "$MATRIX_HOME/homeserver.yaml" $toolUrl
 }
 
 step_18_info() { echo "Drop postgres database for $toolName"; }