Hi, As you guess,I want to run postfix with exchange together.Postfix server will have mx records for the domain.All e-mails will be forwarded to exchange as normal. Outgoing e-mail from exchange must forward to postfix server.Exchange will never send emails directly. in master.cf I wrote exchange's ip address to mynetworks Also I wrote the domain to relay_domains And finally the transport file; transport_maps = hash:/etc/postfix/transport company.com smtp:[exchange.company.com] These configuration parameters is true? If not.Can you give me an idea? Regards,
You should make sure, that postfix accepts mails for extisting users only. You can export a list from the exchange-server or use postfix verifiy
