My Exchange server is running Exchange 2000 on a Windows 2000 server which resides on a DMZ on our firewall. We are able to send and receive e-mail within the company, but when someone tries to send an e-mail outside of our domain, it is immediately rejected with the response that "none of your e-mail accounts could send to this recipient". Likewise, when someone tries to send us e-mail from outside of our domain, the message is returned as undeliverable. I have contacted technical support for the firewall and they have stated that it is an internal DNS configuration problem. I am able to Telnet directly to the Exchange server, so I guess the firewall technical support is right. Any ideas on how I can configure the DNS on the Exchange server so people can send e-mail outside of our domain? Please help!!
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You probably have an internal IP assigned to the Exchange Server.
What I would do is clear the DNS cache on your DNS servers, or, delete the cached entry for that domain you have the server set up for. Restart the DNS server service, and client service. On the …
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I think you're right.
I'm thinking that external mail servers cannot see your mail server from the outside. When they are attempting to locate you, they are bumping into your firewall and can't get through. So we need to think about what needs to take place so that …
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