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Win2000 Echange SMTP problem

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by shanghai sam

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I have a client that has a random problem sending mail out of Exchange 2000. The mail will sit in the SMTP queue and eventually ends up with NDR's. The message returns as an Internal DNS error prevented delivery of the message. I have looked thiserror up and have found the problem only relating to ISA server which they do not run. They have Internet access through a wireless provider and are not given an external IP nor actual DNS servers to query. We are instructed to use the Gateway/Firewall's address as the DNS server and are able to browse the internet fine. As a result the server is unable to ping hosts such as www.microsoft.com. Mail will work for a month and then quit, last time they had this problem I restarted the DNS Client service and the mail moved freely. This time we have rebooted the server and the mail still sits undeliverable.

Win2000 SP2 Exchange 2000 SP1

Thanks

3 replies

by gregberry

The first thing you should do is install SP2 for Exchange. The next thing you should do is setup DNS on your Exchange Server. The workstations should point to that servers lan ip address. You can setup a forwarder in your DNS manager with your firewall's address. Exchange 2000 depends highly on DNS. You may also try to restart SMTP in the MS Exchange manager under Protocols. You could also create another SMTP entry and give the original entry the port number 26 and make sure the new entryuses 25

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