Nagios Support Forum

Posted: **Fri Feb 19, 2021 8:25 am**

Hello,

We seem to be having issues with email notifcations to email addresses from contacts which have no user. The contact template was set to

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generic-contact

as we know there are issues with

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xi_contact_generic

for contacts without a user.

The

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contact_generic

contact template uses the

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notify-service-by-email

command which has configured:

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/usr/bin/printf "%b" "***** Nagios Monitor XI Alert *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$

Notifications are visible in the Notifications overview, but the message never arrives in the mailboxes, either internal, nor external.

Please advice how to troubleshoot this, what logs we should check etc. We have this problem both on QA as PR.

Grtz

Willem

Posted: **Fri Feb 19, 2021 5:56 pm**

What OS and version of XI is this?

I would watch the /usr/local/nagiosxi/var/cmdsubsys.log, event_handler.log, and eventman.logs while you trigger a service to send and email.

Please send me a profile in a private message after reproducing the behavior and I can look over the logs and configuration. Let me know the name of the host and service you tested.

Posted: **Tue Feb 23, 2021 5:21 am**

Hi,

I'm a colleague of Willem and I reproduced the issue and send you the system-profile in a private message.

The most information I saw was from the eventman.log where I could clearly see that the email was send to my work email address for which a user exists. But nothing to my private address for which I have a contact only.
But I see this in the notifications:

Notifications.png

So, for a user the dispatcher is NagiosXI and the gmail contact it's custom:...

Kind regards,
Peter

Posted: **Wed Feb 24, 2021 12:24 pm**

Those Core Contacts (contacts without a user) will use the backend MTA to send the notifications, if they are not making it to the mailboxes you should watch this file for errors:

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/var/log/maillog

Is postfix running?

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systemctl status postfix

Do you have a relayhost setup in /etc/postfix/main.cf?

What is the output of this command?

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alternatives --display mta

Posted: **Fri Feb 26, 2021 6:49 am**

Hi,

thanks for this info.
Postfix wasn't the issue, but we were able to exclude this from the root cause.
We never used postfix and it wasn't even configured on the Nagios server.

The screenshot you see above was from our QA environment.
Meaning, the "notify-host-by-email-core" works and is going via smtp. But mailing to external addresses was blocked on the relay server for this QA server.
Retrying this from our PR server works.
Tested this by running the command manually from cli.

The route cause of the email notification not working on our PR server was that for that specific contact the wrong template settings were used: "notify-host-by-email".
That command is indeed trying to use postfix.
So, changing that to "...email-core" solved the issue.

Thanks for the hints.

Kind regards,
Peter

Posted: **Fri Feb 26, 2021 11:13 am**

Hi Peter,

Glad to hear you got it solved!

We'll go ahead and mark this as resolved. Just open another topic if you have any new questions.

Benjamin

Nagios Support Forum

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