Foreign host is whatever host is on the other end of your
connection.
Check your server's log files for the answer at
/usr/local/aolserver/log/server-???.log or wherever it might be.
Your server is probably generating some error in a preauth filter.
(I created a patch for AOLServer 4.0 to return an error to the user
in this case instead of just dying. We'll see what they do with
it.)
