Can you do NSLookup and set server=the external server IP and get a DNS query reply? If not, the firewall may well be blocking the DNS traffic. What DNS servers are you using? Send an IP and I'll try a query from here to make sure the server is working...
*********************** Charlie Kaiser charl...@golden-eagle.org Kingman, AZ *********************** > -----Original Message----- > From: Art DeKneef [mailto:art.dekn...@cox.net] > Sent: Friday, May 01, 2009 8:35 AM > To: NT System Admin Issues > Subject: RE: Server 2003 DNS issue > > Forgot to mention. DNS is set to use Forwarders. Originally > had Qwest DNS servers and switched to OpenDNS servers. Same > result. I can ping forwarders by IP but not by name. No > firewall rules changed. > > Internal DNS works fine. Ping a workstation by name and it resolves. > > I'll see what Netmon shows. > > -----Original Message----- > From: Charlie Kaiser [mailto:charl...@golden-eagle.org] > Sent: Friday, May 01, 2009 8:23 AM > To: NT System Admin Issues > Subject: RE: Server 2003 DNS issue > > How is external DNS set up? Forwarders? Root hints? I usually > use forwarders. See if you can ping the listed forwarders; > then try a Nslookup using those IPs as the server. Any > firewall rules that might have been inadvertently changed? It > sounds like DNS queries aren't getting replies from outside. > Does internal DNS work? > > You might throw wireshark on the box and see what the DNS > queries do... > > *********************** > Charlie Kaiser > charl...@golden-eagle.org > Kingman, AZ > *********************** > > > -----Original Message----- > > From: Art DeKneef [mailto:art.dekn...@cox.net] > > Sent: Friday, May 01, 2009 8:16 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/> ~ > > > ~ Finally, powerful endpoint security that ISN'T a resource > hog! ~ ~ > <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
