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<DIV>Stephen</DIV>
<DIV> </DIV>
<DIV>Most email systems move messages to a retry queue if the first attempt at sending fails.</DIV>
<DIV>If your email does something like that you can just write a simple script to check whether</DIV>
<DIV>it is empty or not and return a status to Nagios. There might be a genuine reason why</DIV>
<DIV>the first send fails, but at least you get alerted. You could even get the script to send a</DIV>
<DIV>test email at this point and check whether the queue grows by one.</DIV>
<DIV> </DIV>
<DIV>Regards</DIV>
<DIV> </DIV>
<DIV>Paul Willis<BR><BR>>>> "Stephen H. Dawson" <service@shdawson.com> 04/05/10 10:57 >>><BR></DIV>
<DIV><SPAN class=330515309-04052010>Hi,</SPAN></DIV>
<DIV><SPAN class=330515309-04052010></SPAN> </DIV>
<DIV><SPAN class=330515309-04052010></SPAN> </DIV>
<DIV><SPAN class=330515309-04052010>We have looked at the check_smtp option to meet our need, but do not believe this option will work. Looking for perhaps another option.</SPAN></DIV>
<DIV><SPAN class=330515309-04052010><SPAN lang=EN></SPAN></SPAN> </DIV>
<DIV><SPAN class=330515309-04052010><SPAN lang=EN>Failure of an SMTP connection to <SPAN class=330515309-04052010>our ISP's </SPAN>mail server with Nagios will only tell us that the Nagios attempt to connect has failed, at that particular point in time.<SPAN class=330515309-04052010> We are running our Nagios box on CentOS. </SPAN>The CentOS attempt itself could well connect and send a message a few seconds/minutes before or after that.<SPAN class=330515309-04052010> </SPAN>We also run the risk of being accused of 'excessive' number of emails<SPAN class=330515309-04052010> with our ISP's email server.</SPAN></DIV>
<DIV>
<P><SPAN class=330515309-04052010></SPAN></SPAN></SPAN><SPAN class=330515309-04052010><SPAN lang=EN>So the only reliable way of checking if ISP SMTP relay connection works is to parse the CentOS logs and look for failures to authenticate/send.</SPAN></SPAN></P>
<P><SPAN class=330515309-04052010><SPAN lang=EN>Has anyone parsed a log for review with Nagios? If so, please advise.</SPAN></SPAN></P>
<P><SPAN class=330515309-04052010><SPAN lang=EN></SPAN></SPAN> </P>
<P><SPAN class=330515309-04052010><SPAN lang=EN>Thanks,<BR>SHD</P></DIV></SPAN></SPAN></BODY></HTML>