Mail settings nagios

ericosman · Post by **ericosman** » Wed Nov 05, 2014 2:39 am

Hi,

I finaly have my Nagios up and running as i want ( thanks to you guys! )
But now at this moment Nagios will not sent real mails....
Could anyone tell me where i can change the mail settings ?

We use a Exchange 2010 for the mail.

Thanks in advance!

Ramdas · Post by **Ramdas** » Wed Nov 05, 2014 6:10 am

Hi,

Try to send a test e-mail from Nagios server to your inbox first, If it working then you should check your command configuration.

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/bin/mail -s "subject" [email protected]
<Body>
.

If still you not receiving an e-mail to your inbox then try followings on the Nagios server. (I am assuming that you may using CentOS/RHEL)

a.Install the following packages,

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# yum install sendmail sendmail-cf

b.There is no need to start the Sendmail in Listening mode, because Nagios server simply sent the e-mail notification and it will not receive any e-mail.
so, Edit the file /etc/sysconfig/sendmail and modify the line:

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DAEMON=no

c.Configure the Mail submission. edit the /etc/mail/submit.mc file & find and edit the following line as follows,

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FEATURE(`msp',`<SMTP-Mail Relay server>')

d.Run the following command to update the /etc/mail/submit.cf file

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# m4 /etc/mail/submit.mc > /etc/mail/submit.cf

e.Restart the “sendmail” service for the configuration changes to be effective:

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# /etc/init.d/sendmail restart

By
_Ram

Post by **rhassing** » Wed Nov 05, 2014 8:55 am

Hello Eric,

Are you running Nagios on Linux?
If you are, which distribution are you using? (CentOS, Red Hat, Fedora, Ubuntu, etc.)
Do you know which MTA is running, Postfix or Sendmail?

Actually this has not much to do with Nagios, but more with Linux in general

Best regards,
Rob

ericosman · Post by **ericosman** » Wed Nov 05, 2014 8:59 am

rhassing wrote:Hello Eric,

Are you running Nagios on Linux?
If you are, which distribution are you using? (CentOS, Red Hat, Fedora, Ubuntu, etc.)
Do you know which MTA is running, Postfix or Sendmail?

Actually this has not much to do with Nagios, but more with Linux in general

Best regards,
Rob

Hi Rob,

I'm using Centos 6.4.
I cant give anymore information because i dont know what is running.

Post by **eloyd** » Wed Nov 05, 2014 9:04 am

Type this as root:

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lsof -i:25

If it says that the command is not found, then do this first and then type the lsof command again:

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yum -y install lsof

ericosman · Post by **ericosman** » Wed Nov 05, 2014 10:17 am

I got this :

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[root@Nagios ~]# lsof -i:25
COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
master  2264 root   12u  IPv4  14141      0t0  TCP localhost:smtp (LISTEN)
master  2264 root   13u  IPv6  14143      0t0  TCP localhost:smtp (LISTEN)
You have new mail in /var/spool/mail/root

Post by **eloyd** » Wed Nov 05, 2014 10:44 am

That's part of postfix.

slansing · Post by **slansing** » Wed Nov 05, 2014 10:46 am

I highly recommend you follow this guide, it should get you on the right track and cover most if not all of the requirements you have:

http://www.telnetport25.com/2012/02/con ... gios-core/

Post by **rhassing** » Wed Nov 05, 2014 12:42 pm

For postfix you could do the following:
Routing all mails to a smarthost (which could be you exchange server):

As it is CentOS, I assume the postfix config files live in /etc/postfix/main.cf

In/etc/postfix/main.cf add the line:

relayhost = <your exchange ip address>:25

abrist · Post by **abrist** » Wed Nov 05, 2014 4:53 pm

OP: Have any of the proceeding suggestions worked for you?

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