[IMP] mailserver model migrated to API v8
[IMP] mailserver model migrated to API v8

online-sanaullah/odoo-infrastructure,adhoc-dev/odoo-infrastructure,dvitme/odoo-infrastructure,yelizariev/odoo-infrastructure,steingabelgaard/odoo-infrastructure,bmya/odoo-infrastructure,aek/odoo-infrastructure,ingadhoc/odoo-infrastructure,ingadhoc/infrastructure,fevxie/odoo-infrastructure