there is an obligatory CNAME entry for one of my Google domains.
It reads:
_domainconnect.[mydomain].de CNAME 6 hours connect.domains.google.com.
What is this CNAME entry used for? As far as I have understood DNS this should not be necessary to find the actual server IP.
It is indeed not necessary for IP lookup. I suppose maybe Google itself uses it for something. I've found this https://community.cloudflare.com/t/domainconnect-in-dns-record-is-it-needed/185059 but no actual explanation of what it is.
I noticed this entry in one of my domains I have in CloudFlare that is registered via Google Domains, I also have another domain purchased there with a DNS zone on CF that does not have it. I'd say it's safe to get rid of the record — Google's dashboard never complained about it and DNS itself certainly does not need it.
It is more protocol than anything, and is not used to find your server's IP.
There is an open Web standard called Domain Connect that Google adheres to. Within Domain Connect's specifications (at this link at the time of writing) there is a section called DNS Provider Discovery that gives a full explanation of the spec Google is trying to fulfill by having that CNAME record.
To summarize what the Domain Connect docs say on this spec:
Every domain name, to meet this spec, needs to provide information on what DNS provider is being used (in your case, Google). It says that that information must be available via a TXT type DNS record with the host name of _domainconnect.<your domain name here>.
However, the docs alternatively allow for a CNAME type DNS record (CNAME is used as an alias record) with host name _domainconnect.<your domain name here> to point to another domain/subdomain that contains this TXT record with the record value the spec asks for. (Google does it the CNAME way with connect.domains.google.com. as the value.)
Whichever way this spec is done, the record value of this final TXT record should be a domain that you can do an HTTP GET request to, with the full URL being in the form of https://<the TXT record value>/v2/<your domain>/settings to get a JSON response that contains information about the DNS provider.
To see this in action:
If I go to a DNS lookup tool site like https://mxtoolbox.com/txtlookup.aspx, I can put the value of the CNAME record, connect.domains.google.com, in the search bar and see the corresponding TXT record, which has a record value of "domainconnect.googleapis.com". (Note: of course, when I use this value in an HTTP GET request in the next step, I'm going to strip off the double quotes.)
I should then be able to do an HTTP GET request to https://domainconnect.googleapis.com/v2/mydomain.de/settings and get a JSON response with information on Google as a DNS provider. I can see the JSON by just entering that URL in a browser URL bar. At the time of writing, assuming mydomain.de was a valid domain with Google Domains as its DNS provider, you should get:
{
"providerId": "domains.google.com",
"providerName": "Google Domains",
"providerDisplayName": "Google Domains",
"urlSyncUX": "https://domains.google.com/domainconnect",
"urlAPI": "https://domainconnect.googleapis.com"
}
And that entire journey was so that people/software can see who your DNS provider is, and some basic info about them, all via DNS. Phew...
Be advised that Google isn't the only big DNS provider that adheres to Domain Connect specs.
I created a web-application that agencies can use via white-label so my brand is 100% removed and replaced with theirs. I have a completely irrelevant primary domain they can use and they get a subdomain on that primary domain... we'll call it defaulturl.com. So their custom URL would be something like "agency.defaulturl.com"
I have everything working except I am trying to make emails coming from the application come from their custom domain. So I need to create some sort of "wildcard" verified identity in Amazon SES so these subdomains works.
I was able to get *#defaulturl.com to work, but this isn't their domain. I instead need something like *#*.defaulturl.com.
I've tried with no avail, is this possible?
I am trying to create a saas and for that, I need to create an API and I am not sure how can I create an endpoint like this https://api.karix.io/message/ here domain is https://api.karix.io and endpoint is the message. I know how to create an API using nodejs but not sure how can I create for the domain-specific.can anyone help me with this problem?
A domain is basically a link to an ip-adress. There are DNS-Servers who transate between the human readable form and the ip.
If you want to run your app on a specific domain you need to purchase that domain (which can be quite costly) and the dns Server will create a link between the domain name and ip adress.
So basically you dont need to do anything in order to create the rest-api for your domain.
Later the request are similiar to this:
https://api.karix.io/message/
http://192.168.111.111:80/message <- The ip obviously differs in production
The name of the domain should be accessible in your request-Object atleast in the express framework.
I need to create a temporary working space for each client that is not logged in (a folder on the server) before the client logs in.
I am currently using the ip address to create an object but there can be more than one client with the same ip if they come from the same client LAN.
These clients will end up at the same folder and their work will be commingled.
How do i differentiate for these clients?
I am working with MEAN stack
Since you have clients that can log in, create the folder for those users based on their unique identifier (like their database id) when the user information is created. When they log in, you will know what folder to use.
You could use cookies or some browser session to assign unique identifiers (uuids?) to users as they hit your site. You could use browser-fingerprint and/or uuid to assign unique values.
I've just started using MVC5 and I want to make my website available just for a specific IP address, so I check the client IP address using the following:
Request.UserHostAddress;
I have two users to access to my website and every one have to access from specific IP address, so I need your help to know how to do this note that I use the default user authentication from MVC.
Every single support word is appreciated.