Re: Web site viewable from outside office but not on Lan
- From: "Kevin D. Goodknecht Sr. [MVP]" <admin@xxxxxxxxxxxxxx>
- Date: Wed, 14 Sep 2005 21:48:12 -0500
Jason Stevens <junk@xxxxxxxx> wrote:
> We host our own web site and also have an Intranet that is set up as
> basically another web site. We also host a 3rd site for one of our
> clients. The one has a domain of .com and the other .net.
>
> www.ourcompany.com - our web site
> www.ourcompany.net - our intranet
> www.client.com - the clients site
I notice from the server ipconfig /all that the public address on this
server is dynamic, so any of these sites if hosted locally will need to
point to a record that is dynamically updated so external users can access
the site when the IP changes.
Other than the problem noted below with the mail server, I think this is
mostly an IIS and a firewall problem. You need to make sure the proper ports
are open, and host header and IP addresses are properly configured in IIS.
>
> We used to be able to view all of them from the LAN and from outside
> the office. Now I can still view the .net from both the Lan and
> outside but the .com is only viewable from outside. When I try to
> view it from the Lan it just says "The page can not be displayed".
>
> The reason that I think this is a DNS issue is that for the clients
> site I went into the DNS and added a Forward Lookup Zone for
> www.client.com and then added a host with a blank name and assigned
> it to the correct IP address. I was then able to see this site from
> both the LAN and outside the office.
>
> There is a Forward Lookup Zone for ourcompany.com and it has a host
> with the same IP. The only difference that I see in the Zones is
> that ourcompany.com has a Text with the data "v=spf1 a mx ptr ~all"
You don't need this zone because it will only conflict with the public zone
hosted with your registrar.
After looking at the zone for this public domain, there is a major problem
with the MX record, it says
mail server host name is mail.rgsassociates.com, but that record is an alias
record (CNAME) some mail servers will not send to or receive mail from a
mail server using a CNAME.
See: http://www.dnsreport.com/tools/dnsreport.ch?domain=rgsassociates.com
QUESTION SECTION:
rgsassociates.com. IN MX
ANSWER SECTION:
rgsassociates.com. 21220 IN MX 0 mail.rgsassociates.com.
QUESTION SECTION:
mail.rgsassociates.com. IN A
ANSWER SECTION:
mail.rgsassociates.com. 21365 IN CNAME rgsassociates.com.
rgsassociates.com. 21365 IN A 24.229.80.170
You need to delete the CNAME record and create an A record named mail.
You also need to configure the SMTP virtual server in Exchange system
manager with the name mail.rgsassociates.com
The TXT record is an SPF record and is not needed on this server, it should
be in the public zone, which AFAIK your registrar does not support yet.
All sites on this server should be configured in IIS to be on any IP address
so IIS can bind to the External interface. Then the sites should work
internally and externally. The only zone you really need in your local DNS
are the ones for the AD domain which does not conflict with any local sites.
--
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
Hope This Helps
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