Re: Multiple Domains and 1 is not working
- From: "Herb Martin" <news@xxxxxxxxxxxxxx>
- Date: Wed, 25 Jan 2006 05:58:33 -0600
You will get more help if you use better subject lines:
"1st [domain] not working" is going to (likely) get a different
SET of people to respond than is "unable to browse domain
name (without www prefix" which is NOW my guess for
what you really want to solve....but you never make that
clear below...)
[FYI: Initially I passed on answering this question, mostly
do to the subject line and it is my habit to answer a lot of
messages.]
"Adam" <Adam@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:0A2247CE-B901-4AB2-B696-3E701CD7F75A@xxxxxxxxxxxxxxxx
>I have 1 server that is a domain controller.
> (for example)
> The NETBIOS name of the server is ALPHA1
> The FQDN is ALPHA1.ALPHASITE.COM
That would be the "DNS Name" -- only names terminated
by a "." character are FULLY qualified, e.g., x.y.com. <---
> The second domain is THEALPHASITE.COM
> We host our own e-mail and website.
>
> If on the network I type in ALPHASITE.com it works but THEALPHASITE.com
> does
> not go through.
"on the network" has very little meaning to anyone not looking
over your should, so we must assume (and this causes problems
when troubleshooting) you mean something like PING or (more
likely) in Internet Explore (i.e., a web browser.)
> If I ping either address: ALPHASITE.com points to the internal IP:
> 192.168.1.2
> If I ping THEALPHASITE.com it points to the external ip (the site does not
> open internally on hte LAN)
[I am guessing about your problem a bit here...]
Chances are that TheAlphaSite.com is NOT an internal Active
Directory DOMAIN, but merely a DNS zone/domain name.
Chances are that AlphaSite is both, and AD Domain and of
course the DNS zone to go with it.
All DCs register the BARE domain name in the (internal) DNS
zone so you will not likely be able to reach an external web site
from internal machines using that bare name -- e.g., you will need
to access such sites by using a "www" prefix or some other
computer identifier:
> Is this a DNS entry problem that I need to fix? I tried to add host
> records,
> name servers but it still does not work internally. I guess it just needs
> ALPHASITE.com to point to the local ip address first than the external.
You cannot have a DNS resolution (reliably) point to both an internal
and then an external IP using a single DNS Server (set). For that you
need two DNS server sets -- it's called "Shadow DNS" or "Split DNS".
DNS servers treat all duplicate (name) records as equal unless you
fix the order, in which case the FIRST will (almost) always get used.
> On another note, if I type in the public address on the network it does
> not
> open the website.
If it doesn't work by ADDRESS then you have one of several problems:
1) Routing (or firewall filtering)
2) Web Server is using "Host Headers" (DNS names) to offer
multiple sites on the same, single IP address
3) Problems with the server itself (not running etc.)
> Any thoughts?
Tell us exactly what works, and what happens when it doesn't
work.
Use Ping vs. NSlookup vs. a Web browser and compare all of
the results.
Distiguish carefully what works by name and what only works
by IP.
For instance:
If you can ping by name you don't have a DNS
problem in most cases, and you almost certainly don't have a
routing problem.
If you can only ping by IP, then you likely have a name resolution
problem (DNS or maybe even NetBIOS) and you almost certainly
don't have a routing problem.
If you can get a name resolution with NSLookup but not with
ping, then you likely have a client-local name resolution problem
(like some bad entry in the HOSTS file.)
If you get a (correct) name resolution using Ping but failure to
connect then you likely have a routing or filtering problem
(perhaps JUST for ICMP used by ping however) but do not
likely have a name resolution issue.
--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]
.
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