I have setup a Postfix as a relay for an embedded device with a severely broken STMP implementation. Therefore I need to make Postfix to have AUTH enabled and to accept ANY combination of username and password. As of now I have it relaying my mail to another relayhost for the whole subnet, but when the device tries to AUTH PLAIN, Postfix answers with 503 5.5.1 Error: authentication not enabled which make the embedded system interrupt the transmission.
How do I make Postfix accept ANY user:password combination?
Postfix only delegate authentication to a sasl server. Postfix can't help you.