[Pkg-nagios-devel] Bug#608193: Bug#608193: Bug#608193: nagios-plugins: check_snmp misreports CRITICAL socket timeout

[Jan Wagner]

Hi Marc,

On Sunday, 2. January 2011, Marc Haber wrote:
> On Sun, Jan 02, 2011 at 11:18:08PM +0100, Jan Wagner wrote:
> > On Tuesday, 28. December 2010, Marc Haber wrote:
> > > I am seeing this as well on lenny as on sid:
> > > 
> > > $ /usr/lib/nagios/plugins/check_smtp --host q.bofh.de --verbose
> > > HELOCMD: HELO nechayev
> > > 220 q.bofh.de ESMTP Exim 4.72 Tue, 28 Dec 2010 15:54:43 +0100
> > > CRITICAL - Socket timeout after 10 seconds
> > > 
> > > What's going on here?
> > 
> > $ /usr/lib/nagios/plugins/check_smtp --host q.bofh.de --verbose -t 30
> > HELOCMD: HELO nagios
> > 220 q.bofh.de ESMTP Exim 4.72 Sun, 02 Jan 2011 22:59:58 +0100
> > sent QUIT
> > received 221 q.bofh.de closing connection
> > 
> > SMTP OK - 20,091 sec. response time, 221 q.bofh.de closing connection
> > 
> > |time=20,091494s;;;0,000000
> > 
> > As stated on IRC, your MTA seems to delay the answer ... raising the
> > timeout seems to fix the issue.
> 
> As stated MULTIPLE TIMES on IRC, the host running the nagios plugin is
> whitelisted with the MTA and is not subject to the delays that you
> encounter when testing from a non-whitelisted host.
> 
> I offered you on IRC multiple times to whitelist your IP as well but
> you didn't react to that offer.

Trying the test from a system which returns a fqdn via HELO, which hostname 
has also a AAAA record, works as expected:

$ /usr/lib/nagios/plugins/check_smtp --host q.bofh.de --verbose
HELOCMD: HELO bb.cyconet.org
220 q.bofh.de ESMTP Exim 4.72 Sun, 02 Jan 2011 23:41:45 +0100
sent QUIT
received 221 q.bofh.de closing connection

SMTP OK - 0.126 sec. response time, 221 q.bofh.de closing connection
|time=0.125578s;;;0.000000

So it's really likely that there is a configuration problem at the remote MTA.

With kind regards, Jan.
-- 
Never write mail to <waja at spamfalle.info>, you have been warned!
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