Nagios Support Forum

We have the same problem. Notifications for users are sent out normally, but when there is only a contact, no email is sent.

THis is the output of [root@srvnagios01 ~]# ll /etc/alternatives/mta

lrwxrwxrwx. 1 root root 26 Jun 6 2012 /etc/alternatives/mta -> /usr/sbin/sendmail.postfix

Also in the notifications area, you can see the notification to the contact should have been sent out, but no email is arriving in the mailbox.

Tried changing the hostname localhost in Nagios XI itself, and addign an entry to the /etc/hosts "<ip> <hostname> , but still no email notifications for contacts though.
Notifications for users still work though..

Looking into the /var/log/maillog it seems nagios is trying to connect to the wrong smtp server..
I can see the following entries:
May 2 15:35:09 srvnagios01 postfix/smtp[4552]: connect to mail2.domain.be[xxx.123.3.141]:25: Connection timed out
May 2 15:35:39 srvnagios01 postfix/smtp[4552]: connect to mail.domain.be[xxx.123.26.149]:25: Connection timed out

But mail.domain.be and the IP addresses don't exist... So obviously Nagios fails to send the email.. Can anyone tell me where I can change the smtp server he tries connecting to? As I seem to find only information about Nagios Core and Sendmail on the web.


Any help is much appreciated.

@WillemDH: Are you using sendmail or smtp in XI? Have you configured the "send mail from" address in brackets under Admin --> Manage email settings?

We are using smtp in XI. Notifications for users are arrving normally. I'll check tomoorow if I put it between bracket.

Could both of you PM me your latest configuration snapshot? It is located at Admin > Manage Snapshots > Download the latest one by clicking the diskette icon.

Config snapshot has been sent. The contact I have been testing with is "test.contact". Manage Email settings has been set but it's not within brackets => Nagios XI <[email protected]>

Have you set the hostname for this machine?

Yes the hostname of the machine has been set.

Can you provide me with an example host/service who had tripped a notification to be sent? "I should have asked this before, apologies." You can send that information in a PM if need be. In addition, is this test.contact also a user? Do you have a sample user with it's own contact who is not receiving notifications?

Sent you a pm with new config file and tests.

Excellent, I replied via PM, once we solve this there I'll post the resolution here.