To whom it may concern:
I'm using Redhat Linux Enterprise 5 and need to know where my email configuration file is located. My problem is that my server allows me to send email to anyone on my local network but not out to the internet.
So if I type at the prompt: send firstname.lastname@example.org
it fails. If I send to an internal address, the mail is received.
I figure it must be either my firewall, which my administrator says is not the problem or a configuration problem.