diff --git a/conf/install_update_dovecot.conf.sample b/conf/install_update_dovecot.conf.sample
index 9e6baa5..120f95d 100644
--- a/conf/install_update_dovecot.conf.sample
+++ b/conf/install_update_dovecot.conf.sample
@@ -49,6 +49,13 @@ hostname=""
 ipv4=""
 ipv6=""
 
+# - Webserver User
+# -
+# - defaults to:
+# -    http_user=www-data
+# -
+#http_user="www-data"
+
 
 # ---
 # - Listener configuration
diff --git a/install_postfixadmin.sh b/install_postfixadmin.sh
index 69285fb..b12fb23 100755
--- a/install_postfixadmin.sh
+++ b/install_postfixadmin.sh
@@ -2319,12 +2319,17 @@ echononl "\tAdd Apache User (${HTTP_USER}) to group 'dovecot'.."
 if getent group dovecot 2> /dev/null | grep -q "\b${HTTP_USER}\b" > /dev/null 2>&1 ; then
    echo_skipped
 else
-   usermod -a -G dovecot $HTTP_USER > $log_file 2>&1
-   if [[ $? -eq 0 ]] ; then
-      echo_ok
+   if ! $(grep dovecot /etc/group > /dev/null) ; then
+      echo_skipped
+      warn "Group 'dovecot' not present.!"
    else
-      echo_failed
-      error "$(cat $log_file)"
+      usermod -a -G dovecot $HTTP_USER > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
    fi
 fi
 
diff --git a/install_roundcube.sh b/install_roundcube.sh
index 99817c8..7107b6e 100755
--- a/install_roundcube.sh
+++ b/install_roundcube.sh
@@ -108,6 +108,13 @@ is_number() {
    #return $([[ ! -z "${1##*[!0-9]*}" ]])
 }
 
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
 trap clean_up SIGHUP SIGINT SIGTERM
 
 
@@ -164,6 +171,7 @@ fi
 # - Sort array
 # -
 IFS=$'\n' website_arr=($(sort <<<"${unsorted_website_arr[*]}"))
+IFS=' '
 
 
 WEBSITE_NAME=
@@ -552,13 +560,20 @@ _log_dir=${_src_base_dir}/log-roundcube-$_version
 # - * Composer installed either locally or globally (https://getcomposer.org)
 
 
-needed_php_pear_modules="
+needed_php_pear_modules=""
+_needed_php_pear_modules="
    MDB2
    Mail_Mime
    Mail_mimeDecode
    Net_SMTP
    Net_IDNA2
-   Auth_SASL"
+   Auth_SASL
+"
+
+for _module in $_needed_php_pear_modules ; do
+   _module="$(trim $_module)"
+   needed_php_pear_modules="$needed_php_pear_modules $_module"
+done
 
 if [[ "$DB_TYPE" = "pgsql" ]]; then
    needed_php_pear_modules="$needed_php_pear_modules MDB2_Driver_pgsql"
@@ -583,6 +598,7 @@ if $PHP_DEBIAN_INSTALLATION ; then
    fi
 
    for _module in $needed_php_pear_modules ; do
+      _module="$(trim $_module)"
       echononl "\tInstall Module '$_module'.."
       if ! pear list | grep -q "$_module" 2> /dev/null ; then
          pear install $_module > $log_file 2>&1
@@ -621,6 +637,7 @@ else
 
       for _module in $needed_php_pear_modules ; do
 
+         _module="$(trim $_module)"
          echononl "\tInstall Module '$_module'.."
          if ! /usr/local/php-${_version}/bin/pear list | grep -q "$_module" 2> /dev/null ; then
             /usr/local/php-${_version}/bin/pear install $_module > $log_file 2>&1
@@ -1938,6 +1955,7 @@ _needed_packages_spell="
    aspell-fr
    aspell-it"
 for _pkg in $_needed_packages_spell ; do
+   _pkg="$(trim $_pkg)"
    if aptitude search "$_pkg" | grep " $_pkg " | grep -e "^i" > /dev/null 2>&1 ; then
       continue
    else
@@ -2901,7 +2919,7 @@ if [[ "$POSTFIX_DB_TYPE" = 'pgsql' ]] ; then
       su - postgres -c "psql -t -c \"CREATE LANGUAGE plpgsql;\"" > $log_file 2>&1
       if [[ $? -ne 0 ]] ; then
          echo_failed
-         erro $(cat $log_file)
+         error $(cat $log_file)
       else
          echo_ok
       fi
@@ -2994,6 +3012,11 @@ EOF
          _failed=true
       fi
 
+      chmod 600 ~/.pgpass
+      if [[ $? -ne 0 ]]; then
+         _failed=true
+      fi
+
       echo "" >> $log_file
       echo "psql -w -U $POSTFIX_DB_USER $POSTFIX_DB_NAME < $_psql_trigger_file" >> $log_file
       psql -w -U $POSTFIX_DB_USER $POSTFIX_DB_NAME < $_psql_trigger_file >> $log_file 2>&1
@@ -3019,7 +3042,7 @@ EOF
 
       if $_failed ; then
          echo_failed
-         erro $(cat $log_file)
+         error $(cat $log_file)
       else
          echo_ok
       fi
@@ -3088,6 +3111,11 @@ EOF
          _failed=true
       fi
 
+      chmod 600 ~/.pgpass
+      if [[ $? -ne 0 ]]; then
+         _failed=true
+      fi
+
       echo "" >> $log_file
       echo "psql -w -U $POSTFIX_DB_USER $POSTFIX_DB_NAME < $_psql_trigger_file" >> $log_file
       psql -w -U $POSTFIX_DB_USER $POSTFIX_DB_NAME < $_psql_trigger_file >> $log_file 2>&1
@@ -3113,7 +3141,7 @@ EOF
 
       if $_failed ; then
          echo_failed
-         erro $(cat $log_file)
+         error $(cat $log_file)
       else
          echo_ok
       fi
@@ -3182,6 +3210,11 @@ EOF
          _failed=true
       fi
 
+      chmod 600 ~/.pgpass
+      if [[ $? -ne 0 ]]; then
+         _failed=true
+      fi
+
       echo "" >> $log_file
       echo "psql -w -U $POSTFIX_DB_USER $POSTFIX_DB_NAME < $_psql_trigger_file" >> $log_file
       psql -w -U $POSTFIX_DB_USER $POSTFIX_DB_NAME < $_psql_trigger_file >> $log_file 2>&1
@@ -3207,7 +3240,7 @@ EOF
 
       if $_failed ; then
          echo_failed
-         erro $(cat $log_file)
+         error $(cat $log_file)
       else
          echo_ok
       fi
diff --git a/install_update_dovecot.sh b/install_update_dovecot.sh
index 8a70321..91ed69b 100755
--- a/install_update_dovecot.sh
+++ b/install_update_dovecot.sh
@@ -177,6 +177,8 @@ if $xmpp_listener ; then
    [[ -n "$xmpp_listener_port" ]] || xmpp_listener_port="44444"
 fi
 
+[[ -n "$http_user" ]] || http_user="www-data"
+
 [[ -n "$dbname" ]] || dbname="postfix"
 [[ -n "$dbuser" ]] || dbuser="postfix"
 if [[ -z "$dbhost" ]] ; then
@@ -694,6 +696,19 @@ else
 	echo -e "$rc_skipped"
 fi
 
+echononl "\tAdd Apache User (${http_user}) to group 'dovecot'.."
+if getent group dovecot 2> /dev/null | grep -q "\b${http_user}\b" > /dev/null 2>&1 ; then
+   echo -e "$rc_skipped"
+else
+   usermod -a -G dovecot $http_user > ${_log_dir}/system.log 2>&1
+   if [[ $? -eq 0 ]] ; then
+      echo -e "$rc_done"
+   else
+      echo -e "$rc_failed"
+      error "Failed to add Apache User (${http_user}) to group 'dovecot'!"
+   fi
+fi
+
 
 echononl "\tCreate group dovenull.."
 if ! grep dovenull /etc/group > /dev/null ; then
diff --git a/upgrade_roundcube.sh b/upgrade_roundcube.sh
index dc888bf..23605f9 100755
--- a/upgrade_roundcube.sh
+++ b/upgrade_roundcube.sh
@@ -173,6 +173,7 @@ fi
 # - Sort array
 # -
 IFS=$'\n' website_arr=($(sort <<<"${unsorted_website_arr[*]}"))
+IFS=' '
 
 
 WEBSITE_NAME=