When I buy a domain say through Google and I want to host with another web host I change the nameservers on the registrar to the new host. Then I go on the new host and setup the DNS details but my question is, how does that host verify that I own that domain? I … Read More “How does a name server verify ownership of a domain?” »

Hello I have multiple VMs on my network and I would like to be able to access them externally. However each VM has its own apps, docker, services etc. and I would like for example, to use ‘cloud.vm1.pve.example.com’ and I also need to create more sub domains inside the VM. Like someapp.vm1.pve.example.com All VMS are … Read More “Which app should I use to handle sub domains in Linux?” »

Hello. I’ve been using no-ip.com as my DNS provider for years now. A webhosting service, Carrd, just notified users that they are retiring their current DNS setup in March, and that they require users to update their DNS settings. (Yeah, makes sense.) Anyway, currently they only require us to use one or two A records, … Read More “Help with adding CNAME records via TXT” »

My client’s DNS appears to have two SPF records currently: (anonymized) Type Name Data TTL TXT @ v=spf1 include:dc-abc123._spfm.domain.com ~all 1 hour TXT dc-abc123._spfm v=spf1 include:_spf.google.com ~all 1 hour When I run the domain through MX Toolbox SPF checker only row 1 is returned as a pass (https://mxtoolbox.com/spf.aspx). The SPF record I need to add … Read More “Question about multiple SPF records and adding an additional SPF include” »

Why not just 1 entry like most of the other records? submitted by /u/ada-boese [link] [comments] Powered by WPeMatico

I have never set up a dns server before, and I’m not sure I need to set one up to accomplish my goal. My goal is to actively deny/allow ip addresses access to my dns server, or to a dns server. For example, Ip address abc wants to access www.example.com. I need to check a … Read More “**NOOB** I want to set up rules for IP addresses that can access a dns server. Where do I begin?” »

i was reading rfc1035 (the DNS rfc) and came across this: Host name to address mappings were maintained by the Network information Center (NIC) in a single file (HOSTS.TXT) which was FTPed by all hosts. The total network bandwidth consumed in distributing a new version by this scheme is proportional to the square of the … Read More “Bandwidth usage before DNS” »

Using BIND, I have a lot of domains that have my DNS server assigned but don’t have DNS records on my server. Currently they get a denied response when queried, what I would like is for a default response to return a specific IP instead for all of them, all except domains that do exists … Read More “BIND: is it possible to have a default DNS response for all queries for domains that dont exist.” »

If I only need my domain for email, do I still need A/CNAME records? Or is MX only sufficient? Current setup is I have MX record pointing to various google domains (I use gmail), but I have a couple of A records from a long time ago, think I can just delete but wanted to … Read More “Do I need A/CNAME records for email?” »

I didn’t know this was a thing, but when I tried that Yandex Family DNS which blocks porn sites, I thought it will only give a different IP to be resolved for that domain, so that the browser cannot access the site, but actually Google Search results are also now excluding those sites from the … Read More “Google results are changing when DNS is changed.” »