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Why not use check_smtp instead? I don’t think port 25 is an SSL port within sendmail, although I’m no sendmail expert. I use check_smtp in my configuration and it works fine.
Todd
-----Original Message-----
Hi everyone,
I am up to adding our mail servers to our nagios monitoring list and hit a roadblock with monitoring sendmail. I have tried using the following command at the cmdline:
./check_ssmtp -w 5 -c 10 -H mail -p 25
But I get the following error message: CRITICAL - Cannot make SSL connection 29889:error:140770FC:SSL Routines:SSL23_GET_SERVER_HELLO:unknown protocol:s23_clnt.c:475:
I can connect to mail from the Nagios monitor via port 25 and I have also added the host to the sendmail access file. Apparently I am missing something, ideas?
BTW, we have our mail servers clustered so we need to monitor this port vs. the actually service since the sendmail service is running on the active node, thus we cannot use check_nrpe.
Thoughts anyone?
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- RE: [Nagios-users] check_ssmtp (check_tcp) SSL Errors Todd Barbera
