Jan,
> The dovecot authenticator doesn't make much effort to handle the auth protocol
> correctly. The protocol itself is described here:
>
> http://wiki.dovecot.org/Authentication_Protocol
>
> The exim dovecot auth fails to work when there are additional fields specified
> by the authentication configuration (as in case of LDAP or SQL dovecot setup),
> as it assumes a fixed-length array of arguments for the "OK" or "FAIL"
> authentication server responses. I have written a patch which fixes the problem
> and handles the protocol correctly.
Does your patch also address the problem where, when a user enters a
password wrong once, subsequent attempts in the same smtp/auth
connection fail with:
dovecot_plain authenticator failed for ...: 535 Incorrect authentication data (set_id=...)
and dovecot reports:
dovecot: auth(default): BUG: Authentication client gave a PID 1301 of existing connection
johannes