1) update postfix from 2.66 to 3.1
2) add to main.cf
sender_dependent_default_transport_maps = hash:/etc/postfix/relaytransport_map default_transport = newtransport:
3) /etc/postfix/relaytransport_map
# postmap /etc/postfix/relaytransport_map @exemple133.com smtp: @exemple12.ua smtp: @exemple1.com smtp: * newtransport: