Basically I have this environment:
Backup Server Network 192.168.5.x
Production Server with Internet access: 192.168.6.x
of course IPs mapped to a public IP.
I need to configure a SMTP Server to send emails notifying us that backups are done successfully everyday.
I was thinking to setup postfix, basically what I need to setup is a SMTP Server, that send email from server_backups@external_IP.com
is an internal server which is not attach to domain
would this be the Postfix configuration?
myhostname = smtp_server
# mydomain = mycompany.com I think does not apply
myorigin = $myhostname
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost
mynetworks = 192.168.6.0/26, public_IP/24, 127.0.0.0/24