[monit] content-filter check host fails

[Len Conrad]

trying to check clamsmtpd as postfix content-filter with:

if failed host 127.0.0.1 port 10025 protocol smtp with timeout 5 seconds 3 
times within 3 cycles then alert

It always fails, but:

telnet 127.0.0.1 10025

Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.

220 smtp.passthru
quit

221 2.0.0 Bye
Connection closed by foreign host.

suggestions?

Len