An A record is a type of DNS record that maps a name to an IP address. For example, the A record for serverfault.com is 64.34.119.12

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Change of Domain result in Lost Emails?

Recently we've had quite a few requests where clients are changing their domain names and want to keep the same email addresses and have the new domain be the main site. The old domain will then ...
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MX and A Records

Just a quick question about A and MX records. If I have a domain that I have purchased, and I want to get remote mail working eventually, to say: mail.exampledomain.com, do I just put in with my ...
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Website and email hosting on different servers

I have a client site currently on a Hostgator reseller account but I'd like to move the website hosting over to my Linode. The email accounts however should stay with Hostgator. DNS is also managed ...
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How to do multiple wildcard subdomains in a single zone file?

Is this valid use of wildcard CNAME records? @ A 208.77.188.166 stage A 208.77.188.165 dev A 208.77.188.167 * CNAME @ *.stage CNAME stage *.dev CNAME dev Or should ...
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splitting A and MX records

I have a domain name which currently points to a shared hosting service. I've set up a dedicated Apache server for the web hosting, but would like to keep using the mail server of the old host. Is ...
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how do you add an A record for a root domain

this seems really simple, but I can't figure it out. I'm using xname.org since it's free and I own a bunch of domains spread over a few different registrars. The setup I desire is very simple: one A ...
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Subdomain mapping to domain

What happens if you have 2 DNS entries: Name | Type | Value -------------+-------+-------------- example.com | A | 20.20.20.20 example.com | MX | mail.example.com Does this ...
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Multiple computers in SBS domain that need a Remote Desktop Connection with a sub domain

I've been searching the internet for a while for this answer. I have a bunch of computers that are part of a small business server domain and would like to be able to connect to each one individually ...
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Website doesn't work when missing “www”

Does anyone know the solution to this problem? I checked my zone file and there are 2 A records mydomainname.com. 14400 IN A ip.address.x.x localhost 14400 IN A ...
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CNAME and A record have different TTLs. Which one will be cached?

If a CNAME has a TTL of 1 hour that points to an A record with a TTL of 1 minute, will someone who looks up this CNAME have the entire result cached for 1 hour, or will it will keep having to lookup ...
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What happens when I change a Name Server record or an A record in the Zone file or the DNS settings?

I don't really understand how the internet and DNS works. I am inundated with terms I don't understand when trying to read about it on wikipedia. I don't have a computer science background. When ...
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A Record VS. Cname Round N

Experienced DNS Admins please help me understand... I run a small DNS server in a development environment that runs resolution for at most 5 domain names at any one time. My question stems from a ...
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Why are Amazon EC2 Elastic IPs encouraged to be used with a CNAME rather than an “A” record?

I am setting up a server on EC2 that will be used by people that will be freaked out when they see ec2-111-111-111-111.compute-1.amazonaws.com in the URL bar. I know this would be solved by using an ...
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Swiching webhosting company & database erros

Well here comes the situation. I used to have CompanyA for webhosting. (The hosting plan was a shared one). I decided to change the hosting provider and transfer my website to CompanyB, (exclusive ...
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DHCP and DNS on none AD 2003 Server PTR is updating but no A records

I have a strange issue, I have a DHCP and DNS server running in a non AD environment, on Windows 2003 server. I setup DHCP to update DNS A and PTR records even if the client doesnt request it, but I ...
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DNS not resolving for *some* people/locations

We created a new sub-domain (via A record) but it is not resolving for everyone. It's been working for me and some others for about a week, but others still cannot access the site. I don't think ...
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Using www.example.com as the A record

I want example.com and *.example.com to always resolve to www.example.com So if I set the DNS records as: www A server ip (root) CNAME www.example.com * CNAME ...
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DNS NS Records vs A Record

I wish to have someone point and resolve their domain to my web server to begin serving their pages. Is it enough to have the person set only the NS1 and NS2 records to my name server, or must they ...
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Multiple DNS records pointing to a single domain

Our business currently subscribes to a DSL internet connection. We're moving away from this and in fact will have two 3Mbps dedicated fiber connections run into our operations center in the coming ...
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How to set up a BIND DNS server to respond a single IP address to any request on Windows?

I want to configure a BIND DNS server (since Windows Web Server 2008 does not have DNS service, I had to install BIND) that responds any request with a single A record. I had set up a * record but it ...