Nagios Support Forum

Ah-ha! So the solution for this problem was setting the hostname properly. If I ran "hostname -f" it should have returned the FQDN, but it returned just the hostname. In my case I set the hostname with "hostname -v server.domain.com" and restarted nagios and it worked!

I installed Zimbra (an entire Collaboration Suite, not just sendmail) on mine and it just worked, however it only sends to mailboxes on that host. I didn't have to configure anything, but it probably configured sendmail beforehand so I didn't have to. I used CentOS 5.5 for mine. See my thread about ...

So I installed nail, which is a better version of mail. So I call /usr/bin/nail now instead, and it STILL has the same problem! I force the from field with "-f from@domain.com" but it IGNORES it when sending to a remote host! So it still complains about sending as "nagios@host" o...

So I have my nagios installs working fine and dandy, however I cannot send to users on remote servers. The reason is because when nagios sends to a remote user, the from field is "nagios@host" instead of a FQDN. I looked at commands.cfg and see how it calls mail, but there is no flag to pa...