Hi!
> It works this way:
[...]
Ok. But in the very case, it's actually not the client who would want to
read the authzTo attribute, but Server B. Server B tries to decide if a
specific user who authenticated is allowed to assume the authorization
of a different user. For that reason, Server B tries to read the authzTo
attribute of the user object. That user object lives on Server A and
does not have an authzTo attribute but only a saslAuthzTo attribute, due
to the fact that the name of that internal attribute changed between 2.2
and 2.3.