Linus Nordberg linus@nordberg.se writes:
We need a way to express which sender/recipient pair a given XHASHCASHAUTH is authenticating, in the case of multiple RCPT TO.
Correct, when moving the XHASHCASH* things before RCPT TO, more information must be provided by the client.
And it applies not only to authentication, but also to challenge response (since the salt/resource/hashcash input depends on the recipient).
/Niels