Try the msExchange list at Sunbelt.
In the meantime turn up logging. Start here... http://www.msexchange.org/tutorials/SMTPDIAGdiagnose-Exchange-2003-SMTP- DNS.html Cheers. From: Art DeKneef [mailto:[email protected]] Sent: Friday, May 01, 2009 10:16 AM To: NT System Admin Issues Subject: Server 2003 DNS issue Have a client that is having trouble with Internet connectivity and Exchange sending mail externally. Has a SBS 2003 server up to date as of two weeks ago, nothing changed since then that I know of or can see. They can send and receive internal Exchange just fine. Receiving mail externally works fine. Outbound external mail is sitting in the queue. Error message is Unable to bind to the destination server in DNS. Opening IE displays the Page can not be found error message. Nothing in the event logs. Rebooted server, no effect. Ping by IP works. Ping by name doesn't. Error can not find server. Nslookup fails. Checked out several KB articles and all suggestions shown have been configured correctly on the server. Reran the Connect to Internet wizard, no change. Anyone have any ideas while I look some more. It really looks like DNS is broke on this box. Thanks ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
