Nagios Support Forum

scottwilkerson, That was in fact the correct fix if anyone else stumbles upon this thread... Apparently I was given bad information by the customer during testing or something else was off as it is the exact same config as far as I can tell. If anyone else gets this and wants to change the FROM addr...

I have a customer running Nagios Core and for the life of me I cannot get the email just right... Everything works except the server is sending alerts as nagios@nagios.domain.com (adding the server name I think) instead of nagios@domain.com and our relay can't handle this. I've found in other forums...