[freeside] host key verification failed

[Nate Bradley]

solved my own problem.

in order for unattended login to work, you must ssh into the
shellmachine as user root and freeside at least once in order for the
host to be added to the known_host file.  the address used in the
fs_passwd_server command must be the address used when you ssh into the
shellmachine.  if you use a fqdn, you must use that fqdn in the
fs_passwd_server command.  just using the IP address won't work.

or you must change the sshd_config file directive IgnoreUserKnownHosts
from no to yes

the first option is best

maybe this should be added to the documentation