Alert emails stopped after hostname change

Nagios Nagios Configuration support
1

I’ve attempted to change the hostname of my machine, now Nagios stopped sending out alert emails.

I’ve changed the hostname back using hostname oldhostname, however even after a complete reboot, nagios no longer works. Yes, it did work before and was sending out nofications just fine.

Also, doing a printf text | mail -s “test” emailaddress here works just fine as well.

Here’s what my /etc/hosts file looks like:

Do not remove the following line, or various programs

that require network functionality will fail.

127.0.0.1 nag nag.101com.com localhost.localdomain localhost

2

This is no longer a problem - emails started flowing again