AUTH-635 — User password/response rejected by authetication tool
Proxy authentication by RADIUS, LDAP or EXT tool is in process, but the particular server rejects authentication request.
The D level message is just information about negative answer to the initial request to server to check whether any challenge is to be sent to the user. The session continues.
The A level message means incorrect user name, password or response to a challenge given by the user. This can be a typing error, or an attempt to break firewall authentication. The library function returns DENY code and further behavior depends on calling application.