Check_smtp

Lydia Leung L.Leung at enspire.com.au
Thu Dec 23 05:25:29 CET 2004


Hi,
 
I am using Check_smtp to check mail service.
 
Anyone knows how check_smtp works?
 
When I use the internal IP address, I get 0 sec response, which returns
a critical warning in the web.
./check_smtp -H 192.168.250.10 -t 4
SMTP OK - 0 second response time
Socket timeout after 4 seconds
 
But when I use external IP address, it is ok.
./check_smtp -H 202.61.212.25 -v
SMTP OK - 0 sec. response time, 220 itumailsrv.itu.local Microsoft ESMTP
MAIL Service, Version: 6.0.3790.0 ready at  Thu, 23 Dec 2004 15:03:51
+1100
 
I dont know what is socket timeout means?
 
If I use telnet 192.168.250.10 25, I can see the smtp service is ready.
And I can ping 192.168.250.10 without problem.
 
Can anybody explaain it to me?
 
Thanks a lot,
Lydia
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