Which recipient are we authenticating for?

[Niels Möller]

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