Service smtp on xxxxxx is not OK : Unexpected service response

Andrew Clarke andrew at
Wed Jun 25 15:12:44 CEST 2008

I know this has been reported before, but I've gone through all the
offered solutions to no avail.

Hobbit 4.1.2p1 runs smtp checks against several Exchange mail servers.
Was working fine until June 6th (when I added RDP service).
Since then, get alternating Green (4 mins) then Yellow (< 1 min) on SMTP
- Yellow status says "Service smtp on xxxxxxxx is not OK : Unexpected
service response"

- Green status says "Service smtp on xxxxxxxx	 is OK (up)"

- SMTP test always shows as yellow on Hobbit Status pages. 

- Conn test to same IP as SMTP is always Green.

- Telnet to port 25 of SMTP IP from Hobbit command line gives normal
Exchange 220 response.

- Have tried removing RDP service - no change.

- Have tried adding/removing various "send" entries to SMTP test, as per
previous information in the Hobbit archives. I have tried with each of
the following, and with none - 
  send "mail\r\nquit\r\n"
  send "rset\r\nquit\r\n"
  send "ehlo\r\nmailfrom:hobbit (at)\r\nquit\r\n"
  send "vrfy postmaster\r\nquit\r\n"

- all make no difference. NB: I did restart Hobbit between each change &
waited 10 minutes.

- Without the "send" line, my SMTP entry is as follows:
   expect "220"
   options banner
   port 25

- The RDP test works fine!
   Port 3389

Does anyone have any ideas?


Andrew Clarke
Support and Technical Development Officer
BCC IT Solutions
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