I am fairly new to SPF and I want to set my company up to start
publishing our SPF records. I am not sure what the best way to do this
is. I have many servers world wide that are hiding behind a firewalls.
They are not public machines, meaning no public DNS entries, but when I
send out emails from these servers, it appears that its coming from the
external port on the firewalls. So the header sees the IP correctly, but
the server name would be invalid (it shows my internal name, which
doesnt resolve out on the Internet). I am using the SPF wizard and want
to know if I should skip the hostname area and only add the IP
addresses? Since the hostname will never resolve, I am not sure how to
proceed.
If you need more info, let me know.
TIA,
Nurv