check_smtp times out

[Marc Powell]

On Mar 7, 2008, at 5:16 PM, Julie S. Lin wrote:

> Hi All
>
> for one particular server (mail.borken.com)  it sporadically comes  
> back
> "Socket timeout after 10 seconds " when doing smtp_checks.  however,
> another server
> "outside" the cisco pix firewall works fine doing the same check.   
> other
> checks involving mail.borken.com come back fine, so firewall doesn't
> appear to be
> an issue.
>
> below is my configurations.... can anyone kindly point me to things I
> might want to look at?

The question you should be asking is why it sometimes taking  
mail.borken.com more than 10 seconds to respond to a connect with a  
banner and exit after a QUIT command. Is this a busy server? Do you  
use anything like greet-pause on it? As previously mentioned, the mail  
logs on that server might provide some insight but also running  
check_smtp from the command line while it's happening (with -v) might  
be helpful. Also telnetting directly from the command line might prove  
informative...

$ telnet mail.borken.com 25
Trying <ip>...
Connected to mail.borken.com (<ip>).
Escape character is '^]'.
220 mail.borken.com banner; Sat, 8 Mar 2008 09:09:44 -0600
quit
221 2.0.0 mail.borken.com closing connection
Connection closed by foreign host.
$

--
marc

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