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DNS


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#1
manuele

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I setup a SBS 2011 server which hosting a virtual server (server 2008 r2). My problem is, I can ping the IP address of the virtual server from the host server but not the FQDN. From the virtual server, I can ping both the IP and FQDN of the host server...
any help will be much appreciated...

The host server is set to use external DNS and the virtual server is set to use the server (IP) as DNS
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#2
NeonFx

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That's what DNS is for. If you have it pointed to an external DNS, that external DNS would not know what IP address corresponds to that FQDN
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#3
manuele

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thanks for your prompt reply. How would you suggest I setup? could I use external DNS as primary and internal DNS as a secondary on my host DNS settings?
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#4
NeonFx

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Why use external at all? You point the host to the sbs server for DNS and make sure to configure DNS forwarders on the sbs server. If the sbs server is the host it should be pointing to itself for DNS. Make sure to google "DNS forwarding"
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#5
puppet9999

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NeonFX is right. Configure the SBS server to use itself for DNS .
You did not mention if the VM is a member of the domain - I will assume it is however.
The entry in the SBS server's ip configuration for DNS servers should have 127.0.0.1 - that's it.
Forwarders should be configured in DNS (DNS is sunning on SBS - go to administrative tools and use the DNS applet) . If your internal domain matches a public domain and you need to connect to hosts outside of the internal network, a web server for example, then add A Host records in your local DNS server for those public servers with public IP addresses. It is best not to use the same domain name on a local internal network that matches the public domain for your organization. company.com is fine for the Internet , company.local is good for local internal network domain name. If the public matches the private, don't try to change it now (it is changeable but will open a new set of problems) - just be cognizant of this and add host A records for public servers. All internal computers should use internal DNS servers for resolution. The forwarders on the DNS server adds the "smarts" to look outside of the local DNS when needed.


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