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Questions tagged [reverse-dns]

Part of the the Domain Name System (DNS), a hierarchical naming system for discovering IP Addresses in relation to domain names. The Reverse DNS system takes an IP address and returns its configured domain name.

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Mails from my server go to spam - how do I set up a rDNS and DKIM?

I have a website setup on a hosting provider and now when any mails are sent from it, they go to spam in gmail (from field looks like this: contact@mydomain.com via webserver.offshore-hosting-service.com). So i used mail-tester.com to test and I…
strangeQuirks
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Kerberos and DNS lookup

Ok I been getting mixed signals on documents that I read online on Kerberos authentication The KDC servers need to be resolvable by the client for authentication. Does the reverse also need to be true as well? Say if the client/principal is a…
rtu
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Hostname A Record Not Being Found

I just ran a test on mail-tester.com and it mentioned "We didn't find a server (A Record) behind your hostname host.***.com.". But my hostname clearly has an A Record that includes its IP address. Any attempt to add an A Record in WHM through "Add…
Remie
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How to verify ashref, semrush and uptime.com bot (crawler)

To verify google bot should do this: Run a reverse DNS lookup on the accessing IP address from your logs, using the host command. Verify that the domain name is in either googlebot.com or google.com Run a forward DNS lookup on the…
Vahid
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DNS Spoofing with PowerDNS

I want to modify the DNS query answer that PowerDNS returns by replacing the IP of the domain with the IP of a static page. I know the place to do this modification is in the startDoResolve function in pdns_recursor.cc. However I am having trouble…
tectonicpie
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Change XXX host on error: "Host XXX is not allowed to connect to this MySQL server"

When connecting to mysql server, I receive the error "Host XXX is not allowed to connect to this MySQL server". So, I want to change the XXX host name to another more understandable because the name is too long, and I want to configure a mysql user…
nacesprin
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How to cache "SERVFAIL" with bind?

I've searched on google in the last hour and couldn't find anything relevant to my issue, I have bind installed and running flawlessly which I'm using for multiple domains and local reverse lookups, still ... some remote nameservers are offline and…
user3405598
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Cloudflare DNS - what happens if I stop Cloudflare?

I am in the process of setting up Cloudflare.My domain was registered at Godaddy, my host is Hostgator. I understand that I will have to log into Godaddy and point the name server from Hostgator to Cloudflare, is that correct? But I feel…
James
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Swift 3 - CFHostScheduleWithRunLoop crash

I am doing a reverse DNS in Swift, my previous code on Swift 2.2 was working fine, also I have implemented it in Objective-C and it works to. However I am not able to make it works in Swift 3.0 Swift 2.2 //: Let's set up the `sockaddr_in` C…
Alexandre Giguere
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Is it allowed to Substring IPHostEntry.HostName for Machine Name?

Right now i have the requirement to find some PC's Hostname by his IP Address and i solved this problem with this function: /// /// Returns the DNS Name of IP Address without the Domain. /// public string…
Smartis has left SO again
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How Dns Server keep tracks

I was quite eager to understand, how does DNS server work. Scenario If I do a DNS query, it reaches to local DNS server, now local DNS server checks locally, if information is not present, it queries for other DNS servers (in a hierarchical manner,…
Warm_up
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how to bind a domain to AWS cloudfoundry by IP or some other way?

I'm working on a project based on Tencent WeChat and using AWS's server. Because the China government's regulations, we need a domain with ICP license to connected Tencent server. However, AWS's domain(us-east.cf.yaas.io) haven't ICP license in…
leo
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C++ reverse dns lookup (on local network)

I'm currently working on a "list what's up in the local network"-tool and now i'm stuck at the "gimme a hostname for this IP"-part. I already tried getnameinfo and gethostbyaddr, but the first one returns (almost) always the given IP instead of a…
user3128045
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How to verify that Azure Reverse DNS is working properly?

I just got a static IP and ran the command below to get a reserved DNS: Set-AzureService -ServiceName "people-dns" -Description "people-dns reverse DNS" -ReverseDnsFqdn "people-dns.cloudapp.net." Now if I run Get-AzureService it…
Yovav
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What organization identifier to use for open source projects?

Whenever you create a new project in Xcode, it asks for an organization identifier which should be in reverse DNS notation. If my open source project has no domain (nor website), what should I use? I was thinking I could somehow use the GitHub URL,…
Senseful
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