E-Mail Settings and Public Internet

This support forum board is for support questions relating to Nagios XI, our flagship commercial network monitoring solution.
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spatchE
Posts: 24
Joined: Tue Oct 30, 2018 8:05 pm

E-Mail Settings and Public Internet

Post by spatchE »

I am not able to send a test email notification using the same SMTP settings as I use for all other solutions in my environment. I did notice that I am able to ping my gateway/dns by both IP and DNS names however I am NOT able to even ping 8.8.8.8
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tgriep
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Posts: 9190
Joined: Thu Oct 30, 2014 9:02 am

Re: E-Mail Settings and Public Internet

Post by tgriep »

It sounds like either the default route was not setup on the Nagios server or that there is another device on the other side of the gateway is blocking internet access.

If you run the route command as root on the Nagios server it should print out how the routes are setup on the server. See below for an example.

Code: Select all

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
link-local      *               255.255.0.0     U     1002   0        0 eth0
192.168.0.0     *               255.255.0.0     U     0      0        0 eth0
default         gateway.nagios. 0.0.0.0         UG    0      0        0 eth0

You should have a default route setup so the Nagios server knows where to send the traffic to when the server is not on the local network.

If there is a valid route setup, then you may be blocked by another device and you will have to talk to your network admin for help on that.
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