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Configuring a Machine to do DNS lookups

  
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user952

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Since: Oct 11, 2003
Posts: 1



(Msg. 1) Posted: Sat Oct 11, 2003 6:45 pm
Post subject: Configuring a Machine to do DNS lookups
Archived from groups: microsoft>public>inetserver>iis (more info?)
Hi,

I have a Windows 2000 Server that I want to use to Relay
Outgoing Emails. The problem is that the Server cannot
do DNS Lookups for destination domains.

Please help

Cheers, Wina

 >> Stay informed about: Configuring a Machine to do DNS lookups 
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qbernard

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Since: Sep 05, 2003
Posts: 407



(Msg. 2) Posted: Sun Oct 12, 2003 3:57 pm
Post subject: Re: Configuring a Machine to do DNS lookups [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
a) enable DNS lookup then. allow outgoing tcp 53 dns query
XCON Windows 2000 and Exchange 2000 SMTP Use TCP DNS Queries
<a style='text-decoration: underline;' href="http://support.microsoft.com/?id=263237" target="_blank">http://support.microsoft.com/?id=263237</a>

b) forward to 'smart host' using [ip.ip.ip.ip] format -
XCON How to Set Up Windows 2000 as a SMTP Relay Server or Smart Host
<a style='text-decoration: underline;' href="http://support.microsoft.com/?id=293800" target="_blank">http://support.microsoft.com/?id=293800</a>


--
Regards,
Bernard Cheah
<a style='text-decoration: underline;' href="http://support.microsoft.com/" target="_blank">http://support.microsoft.com/</a>
Please respond to newsgroups only ...



"Wina" <mary.evans RemoveThis @vodafone.com.fj> wrote in message
news:04f301c39049$4e38bf20$a001280a@phx.gbl...
 > Hi,
 >
 > I have a Windows 2000 Server that I want to use to Relay
 > Outgoing Emails. The problem is that the Server cannot
 > do DNS Lookups for destination domains.
 >
 > Please help
 >
 > Cheers, Wina<!-- ~MESSAGE_AFTER~ -->

 >> Stay informed about: Configuring a Machine to do DNS lookups 
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user658

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Since: Aug 26, 2003
Posts: 1525



(Msg. 3) Posted: Mon Oct 13, 2003 5:36 pm
Post subject: Re: Configuring a Machine to do DNS lookups [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On Sat, 11 Oct 2003 15:45:01 -0700, "Wina"
<mary.evans.DeleteThis@vodafone.com.fj> wrote:

 >I have a Windows 2000 Server that I want to use to Relay
 >Outgoing Emails. The problem is that the Server cannot
 >do DNS Lookups for destination domains.

Make sure you have a DNS server that can resolve outside your network
(forwards to one or *is* outside your network) in the TCP/IP
properties of your network card. make sure your firewall allows DNS
through from your servr to the outside.

Jeff<!-- ~MESSAGE_AFTER~ -->
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fagent

External


Since: Oct 13, 2003
Posts: 1



(Msg. 4) Posted: Mon Oct 13, 2003 9:49 pm
Post subject: Re: Configuring a Machine to do DNS lookups [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On Mon, 13 Oct 2003 14:36:00 GMT, jcochran.nospam DeleteThis @naplesgov.com (Jeff
Cochran) wrote:

 >On Sat, 11 Oct 2003 15:45:01 -0700, "Wina"
 ><mary.evans DeleteThis @vodafone.com.fj> wrote:
 >
  >>I have a Windows 2000 Server that I want to use to Relay
  >>Outgoing Emails. The problem is that the Server cannot
  >>do DNS Lookups for destination domains.
 >
 >Make sure you have a DNS server that can resolve outside your network
 >(forwards to one or *is* outside your network) in the TCP/IP
 >properties of your network card. make sure your firewall allows DNS
 >through from your servr to the outside.


It's worth noting that some applications (e.g. Windows's nslookup)
are quite happy to resolve DNS using UDP on port 53, but IIS's SMTP
requires TCP on port 53. This certainly caused me a bit trouble
when I could happily resolve external addresses but where IIS's SMTP
service refused to forward external emails because it used TCP for
sending its DNS queries.

So make sure any router access-lists and firewall rules allow both UDP
and TCP out on port 53 to the DNS server(s).



HammY<!-- ~MESSAGE_AFTER~ -->
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