mysql-virtual_sender.cf.master

user = {mysql_server_ispconfig_user}
password = {mysql_server_ispconfig_password}
dbname = {mysql_server_database}
table        = mail_access
select_field = access
where_field  = source
additional_conditions = and type = 'sender' and active = 'y' and server_id = {server_id}
hosts = {mysql_server_ip}