secure smtp

Is anyone using hobbit to monitor smtps (secure smtp) ?

I am unable to get hobbit to use STARTTLS as I get this error message:
Unspecified SSL error in SSL_connect to smtp (6400/tcp) on host
xxx.xxx.xxx.xx: error:140770FC:SSL
routines:SSL23_GET_SERVER_HELLO:unknown protocol

bb-hosts looks like this:

xxx.xxx.xxx.xxx	hostname	# smtps

and bb-services looks like this:

[smtps]
   send "mail\r\nquit\r\n"
   expect "220"
   options ssl,banner
#  No default port-number assignment for smtps - nonstandard according
to IANA
   port 25


any idea ?