Executing the Scripts

/"pathtomysql"/mysql -u root -p < \
/var/www/html/xerxes-frontend/scripts/insert_user_mysql.sql

(type in mysql root password)
Then:

/"pathtomysql"/mysql mail -u mail -p < \
/var/www/html/xerxes-frontend/scripts/create_mysql.sql

(enter password for mail database)