I need some serious help with DNS. I have a 2003/2000 AD. We are able to send email to most places. I can't send it to one address. If I try to send an email to the address from outside our network, like hotmail, yahoo, sbcglobal, they get it without a problem. I don't know what type of record I need to add to the DNS. Do I need to add a new Forward lookup zone, or what. I know that we can't access the www.namesecure.com
website or anything else. Our network service says that it isn't with our firewall, it's with our internal DNS.
I am grateful for any help you can give me.