?
Solved

DNS resolves internally but not externally

Posted on 2004-08-16
10
Medium Priority
?
1,345 Views
Last Modified: 2013-12-19
I have a dns server set to fastdomain.com its a set domain name and in working practise so i cant change its name.

Server
Name Mailexchange
IP 169.254.10.10
DNS name FASTDOMAIN.COM
FQDN MAILEXCHANGE.FASTDOMAIN.com
but my Q. is.

I have a server running DNS/EXchange/DHCP. called mailexchange

now i have a MS VPN server , using routing and remote services.
All of the users that access our network and retrieve there mail have to use a host file fix ,per pc to be able to access our server.

Every server thats inside our network is available via name IF , and ONLY IF u put there name and ip in the reservation of the DHCP.
OR if you place each one individually into the clients host file.


If on any client without the host file fix , i cannot PING mailexchange, but i can ping the ip 169.254.10.10. the most confusing thing is that every VPN is set to ip address 169.254.10.* and the dns as 169.254.10.10 witch is correct.

y does it not resolve to the proper name

in short all external clients cannont ping
mailexchange
fastdomain.com
or
mailexchange.fastdomain.com

and if they do ping it they resolve an  external address of someone who owns fastdomain.com

any resoloution ?>.....

0
Comment
Question by:Mcfake
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
10 Comments
 
LVL 5

Expert Comment

by:scottman29
ID: 11811959
did you create the appropriate host records in DNS for each of the servers?
0
 
LVL 2

Author Comment

by:Mcfake
ID: 11811981
hi, and yes all the host records are set. and i also have a reverse PTR set aswell.
0
 
LVL 5

Expert Comment

by:scottman29
ID: 11813403
VPN clients typically get their information from the RAS server they authenticated on.  Do you have it set up that the clients will get their ip address from the DHCP server, or from the DHCP server on the RAS server?
0
Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

 
LVL 2

Author Comment

by:Mcfake
ID: 11818336
i have tried with 2 different VPN servers 1 that is dhcp ,and 1 that is specified. in both cases it cannot c the domain server via name.
0
 
LVL 2

Author Comment

by:Mcfake
ID: 11841498
anyone ?
0
 
LVL 2

Author Comment

by:Mcfake
ID: 11841607
coz this annoying me so  much im increaseing points to 500
0
 
LVL 5

Accepted Solution

by:
scottman29 earned 1000 total points
ID: 11842364
about the clients resolving the external address to the owner of fastdomain.com, do a nslookup (www.zoneedit.com) to see what the dns records are for your domain on the outside.  Perhaps there is an incorrect entry in the external DNS?
0
 
LVL 7

Assisted Solution

by:LimeSMJ
LimeSMJ earned 1000 total points
ID: 11848672
You might be having a Split DNS issue...  check out: http://www.isaserver.org/articles/2004dnsbo.html for details regarding Split DNS... even if it's an article for ISA Server, some of the DNS fundamentals are the same for any firewall.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Enterprise networks where VoIP phones have been deployed frequently use port configurations that allow both a computer and an IP phone to be plugged into the same switch port but use different VLANs. On Cisco equipment I'm referring to the "native V…
The Need In an Active Directory enviroment, the PDC emulator provide time synchronization for the domain. This is important since Active Directory uses Kerberos for authentication.  By default, if the time difference between systems is off by more …
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question