Nagios Support Forum

It appears that our e-mail notifications aren't working. The log shows that they're being sent, but we don't actually get them. When I send a test message, those do come thru. I'm not really sure what to check for next.

It shows in the log. Can you check to see if you're getting notifications in /var/spool/mail/root ?

yes, that log is very full of notifications.

550 5.1.2 <>... Host unknown (Name server: exchange3.****.org: host not found)

That's our old email server. I can't seem to find where to change this value. When I look in the NagiosXI EMail settings, it's set for our new mail server; but somewhere; it's getting this value; which is wrong.

If you are using "Sendmail", you can try switching to "SMTP". Check all of your settings: host, port, username, password and security. Also, double check your firewall settings. If it is not a problem, you can temporarily disable your firewall just to test it.

I already tried sendmail, same results. Everything is internal, so I don't see how it would be the firewall.

Can you try logging into the postgresql, from the command line:

psql nagiosxi nagiosxi
SELECT * FROM xi_options

The setting we're looking for is the smtp_ stuff, is that up to date?

hmm, that doesn't seem to return any results. it just moves to the next line.

Is it connecting to the database in the first place? Does it give you a psql prompt after you enter the 'psql nagiosx nagiosxi' at the command prompt?

Edit:

Upon glancing at my previous post, I made a slight typo:

SELECT * FROM xi_options;

I forgot the semicolon.

okay; that worked. Yes, all SMTP items seem to be correct. I just don't understand why all the sudden I'm not getting messages. I get the 'test' message just fine.