diff --git a/install_postfixadmin.sh b/install_postfixadmin.sh
index 48838ea..68aca6e 100755
--- a/install_postfixadmin.sh
+++ b/install_postfixadmin.sh
@@ -224,8 +224,14 @@ DEFAULT_POSTFIX_DB_HOST_PGSQL="/run/postgresql"
 DEFAULT_POSTFIX_DB_HOST_MYSQL="unix:/tmp/mysql.sock"
 DEFAULT_POSTFIX_DB_NAME="postfix"
 DEFAULT_POSTFIX_DB_USER="postfix"
-DEFAULT_DEBIAN_MYSQL_CREDENTIALS="--defaults-file=/etc/mysql/debian.cnf"
-DEFAULT_MYSQL_CREDENTIALS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
+if [[ -f "/usr/local/mysql/sys-maint.cnf" ]] ; then
+   DEFAULT_MYSQL_CREDENTIALS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
+elif [[ -f "/etc/mysql/debian.cnf" ]] ; then
+   DEFAULT_MYSQL_CREDENTIALS="--defaults-file=/etc/mysql/debian.cnf"
+else
+   DEFAULT_MYSQL_CREDENTIALS=""
+fi
+DEFAULT_DEBIAN_MYSQL_CREDENTIALS="/etc/mysql/debian.cnf"
 
 DEFAULT_DOVEADM_PW="/usr/local/dovecot/bin/doveadm pw"
 DEFAULT_DELETED_MAILBOX_DIR="/var/deleted-maildirs"
@@ -538,14 +544,29 @@ else
    echo_skipped
 fi
 
-
 if [[ "$POSTFIX_DB_TYPE" = "mysql" ]] ; then
-   if ! mysql $MYSQL_CREDENTIALS -N -s -e \
-      "SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = '$POSTFIX_DB_NAME'" 2>> $log_file \
-      | grep $POSTFIX_DB_NAME >> $log_file 2>&1 ; then
-      database_exists=false
+   echononl "\tCheck if database '$POSTFIX_DB_NAME' already exists.."
+   _db_response="$(mysql $MYSQL_CREDENTIALS -N -s -e \
+      "SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = '$POSTFIX_DB_NAME'" 2>> $log_file)"
+   if [[ $? -ne 0 ]] ; then
+      echo_failed
+
+      echo ""
+      echo -e "\tMaybw your MySQL credentials are wrong. the credentials given were:"
+      echo ""
+      echo -e "\t   MYSQL_CREDENTIALS: $MYSQL_CREDENTIALS"
+      echo ""
+
+      error "$(cat $log_file)"
+      fatal "Checking if database exists failed!"
    else
+      echo_ok
+   fi
+
+   if [[ "${_db_response}" = "${POSTFIX_DB_NAME}" ]]; then
       database_exists=true
+   else
+      database_exists=false
    fi
 elif [[ "$POSTFIX_DB_TYPE" = "pgsql" ]]; then
    count=$(su - postgres -c "psql -q -A -t -l" | grep -c -e "^$POSTFIX_DB_NAME")
@@ -602,23 +623,41 @@ if ! $database_exists ; then
    fi
 else
    echononl "\tBackup Postfix Database '$POSTFIX_DB_NAME'"
-   if [[ "$POSTFIX_DB_TYPE" = "mysql" ]]; then 
-      echo -n " (MySQL).."
-      mysqldump $MYSQL_CREDENTIALS --opt $POSTFIX_DB_NAME > ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
-      if [[ $? -eq 0 ]]; then
-         echo_ok
-      else
-         echo_failed
-         error "$(cat $log_file)"
-      fi
-   elif [[ "$POSTFIX_DB_TYPE" = "pgsql" ]]; then
-      echo -n " (PostgreSQL).."
-      su - postgres -c "pg_dump -c $POSTFIX_DB_NAME" >> ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
-      if [[ $? -eq 0 ]]; then
-         echo_ok
-      else
-         echo_failed
-         error "$(cat $log_file)"
+   if [[ ! -d "${WEBSITE_BASEDIR}" ]] ; then
+      echo_skipped
+   else
+      if [[ "$POSTFIX_DB_TYPE" = "mysql" ]]; then 
+         echo -n " (MySQL).."
+         mysqldump $MYSQL_CREDENTIALS --opt $POSTFIX_DB_NAME > ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
+         if [[ $? -eq 0 ]]; then
+            echo_ok
+         else
+            echo_failed
+            error "$(cat $log_file)"
+            while [[ "${OK,,}" != "yes" ]] && [[ "${OK,,}" != "no" ]] ; do
+               echononl "\033[33mWrong entry!\033[m [\033[1myes/no\033[m]: "
+               read OK
+            done
+            [[ "${OK,,}" = "yes" ]] || fatal "Canceled by user input."
+         fi
+      elif [[ "$POSTFIX_DB_TYPE" = "pgsql" ]]; then
+         echo -n " (PostgreSQL).."
+         su - postgres -c "pg_dump -c $POSTFIX_DB_NAME" >> ${WEBSITE_BASEDIR}/${POSTFIX_DB_NAME}.${backup_date}.sql 2> $log_file
+         if [[ $? -eq 0 ]]; then
+            echo_ok
+         else
+            echo_failed
+            error "$(cat $log_file)"
+
+            echo ""
+            echononl "Continue with this parameters? [\033[1myes/no\033[m]: "
+            read OK
+            while [[ "${OK,,}" != "yes" ]] && [[ "${OK,,}" != "no" ]] ; do
+               echononl "\033[33mWrong entry!\033[m [\033[1myes/no\033[m]: "
+               read OK
+            done
+            [[ "${OK,,}" = "yes" ]] || fatal "Canceled by user input."
+         fi
       fi
    fi
 fi