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Questions tagged [fqdn]

Fully Qualified Domain Name (FQDN)

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Ubuntu 22.04 fresh mail server install - hostname

At a fresh new install of Ubuntu, what should I set as hostname? I'm trying to set a mail server at my local servers with Ubuntu/Postfix, but I'm facing some issues along the way. For this, while ...
rd1218's user avatar
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2 answers
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The correct domain settings in /etc/resolv.conf?

Currently I'm trying to configure settings of internal enterprise domain names for virtual SUSE hosts, which OS is SUSE Linux Enterprise Server 12 SP4. There are two domain names that the SUSE hosts ...
user53815's user avatar
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2 answers
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Name resolution without providing the FQDN, but I can't control what DNS suffixes get appended to my queries

I have a virtual laboratory in which I have setup a domain controller that handles all DNS queries for my domain (x.domain - I have full control over this), and it also contains stub zones for all the ...
Artur Klemens's user avatar
-1 votes
1 answer
99 views

How to find out which server my FQDN points to?

My FQDN https://dopsops.tech/ I dedicated time to some other project,how to find out which server I used. Which commands should I use? curl -I just gives content. report-to: {"endpoints":[{&...
Richard Rublev's user avatar
-2 votes
1 answer
335 views

FQDN as a Forwarder in BIND [closed]

My provider is changing his DNS infrastructure and we have to change forwarders IP to fqdn (Bind). Is there any option to handle that kind of change?
strx_nt's user avatar
1 vote
0 answers
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Domain name change

I just ran into an issue with a client that we are migrating from their forest to a new forest using Quest tool Binary Tree The issue is the source domain is called "domainname" and is not a ...
Ross's user avatar
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2 answers
522 views

Can windows DNS server be configured to return a fully qualified DNS alias?

Problem We have a 3rd party web app installed on a windows server. There is an alias DNS record setup so that user can type in to a web browser the app name i.e. "testapp" and get the site. ...
Richard Holley's user avatar
1 vote
1 answer
1k views

FQDN without the hostname part?

As far as I know, A fully qualified domain name (FQDN) consists of two parts: The hostname part: A single label representing a machine belonging to one specific domain. The domain name part: ...
gossac's user avatar
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1 answer
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Replace VPS rDNS FQDN with a mail subdomain

I have a VPS with a single IP address and multiple domain names. I used mail-tester.com to check the spam rate of my email. And my results are: Your IP address 93.123.12.43 is associated with the ...
Adam's user avatar
  • 287
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1 answer
410 views

How should I configure my hostname/FQDN for a multi-purpose VPS?

I recently got a VPS and have a fresh Ubuntu install, but I'm a bit confused as to how I should be setting up the hostname and /etc/hosts file if I'm wanting to set up an email server (Dovecot/Postfix)...
MisutoWolf's user avatar
2 votes
1 answer
195 views

Can a Second-level domain be considered as a Fully-qualified domain?

I often see people talking about FQDNs (fully-qualified domains) to describe subdomains (e.g., networkengineering.stackexchange.com) that are under a second-level domain (e.g., stackexchange.com). I ...
23r23f23q's user avatar
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how can i block/ban an ip after a number of rejects on a mail server?

I found several attempts to use my email server as relay. The helo command was not coming from a FQDN and therefor the request got rejected. Is there a way to ban an IP address complelty after a ...
zippy-flop's user avatar
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0 answers
109 views

Accessing servers through hostname now requires FQDN?

After upgrading to Linux Mint 20, the servers (pgsql databases and windows network share) on our internal network now require the fully qualified domain instead of just the machine name. For example, ...
DPSSpatial's user avatar
0 votes
1 answer
2k views

In /etc/hosts file why would IPv4 hosts be different from IPv6 hosts?

Background: CentOS 8, Digital Ocean droplet. Question 1) I just looked at my hosts file in /etc/hosts and I noticed that hostnames listed under IPv4 and IPv6 are different. IPv4 lists example, ...
myNewAccount's user avatar
2 votes
0 answers
4k views

Active Directory authentication using format domain.fqdn\username

Assuming an Active Directory domain with FQDN "domain.local" and NetBIOS name "DOMAIN", there are two standard formats to identify user accounts: DOMAIN\username [email protected] (The second ...
Massimo's user avatar
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2 votes
2 answers
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Is a subdomain essentially a host?

I'm trying to understand the difference between a subdomain and a domain in a LAN versus a WAN (Internet). (Or am I just fooling myself. Is it the same?) If I google it I just get that a subdomain is ...
bestprogrammerintheworld's user avatar
-1 votes
2 answers
4k views

Can one have 2 Domains pointing to the same IP and / or 2 IP's resolving to the same Domain?

I am going to attempt to rewrite the initial question so that it makes more sense. The issue I was being faced with is that I have my Company's website hosted on Site Ground but unfortunately ...
John Durchak's user avatar
-3 votes
2 answers
3k views

2 or more web servers share one static ip

I got 1 static Ip from my ISP. I got 2 NS (from NS provider)pointing my domain name towards my wan IP. My question: How do I get server1.domainname.td to reach server 1 inside my network, server2....
Svenie's user avatar
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1 vote
1 answer
1k views

Postfix myhostname suggestion has trailing '.' Where is the bug? In dhclient, postfix or where?

After a minimal debian stretch installation using (debian-9.8.0-amd64-netinst.iso), where hostname is left at the default debian and domain was left empty, installing postfix fails because the ...
Peter V. Mørch's user avatar
1 vote
1 answer
6k views

Can I create a CSR without a Fully Qualified Domain Name?

My client has an Ubuntu server hosted by Digital Ocean. The server has no domain name, we access it via the public IP address. They want to start using https and provided me with a SSL certificate ...
JorgeZapatero's user avatar
-2 votes
1 answer
2k views

Can I view my ssl FQDN? How do I fix the mismatch

I have probably set wrong FQDN while creating ssl certificate. Now, certificate is installed and site display a 'Warning: Potential Security Risk Ahead' I am quite sure it is FQDN as certificate was ...
eagerpupil's user avatar
0 votes
1 answer
646 views

How to change the FQDN on a Lightsail instance?

I've spent the last number of hours trying to work out what's causing the error "hostname: Name or service not known" to be produced when I run the command "hostname -f" on the latest version of ...
Daniel B's user avatar
2 votes
2 answers
3k views

Can a SSL certificate be used on a locally hosted website?

I tried to install Let's Encrypt on my local server. But I could not because it threw errors that I need a fully qualified domain name (FQDN). I use server.arch.local as my hostname. Does it not ...
Just Khaithang's user avatar
-1 votes
1 answer
843 views

Configure bind9 zone records to ping/dig/nslookup/web browse using hostname only or fqdn

What is the proper way to configure a BIND9 zone file to allow ping/dig/nslookup/web browsers to query a host using its hostname or a shortened CNAME record that points to this hostname instead of the ...
thursDave's user avatar
0 votes
1 answer
1k views

FQDN In the same server IIS for multi sites

I have an IIS 8 (win 2012 r2) server with multiples sites and ports: I would use FQDN to access to sites . for exemples : site1.lan : @IP_of_iis_server:9500 site2.lan : @IP_of_iis_server:2729 etc ...
K. ON BUG's user avatar
1 vote
0 answers
216 views

How Can I Prevent Windows Server 2016/AD Installation from Adding TLDs Like .local to My Domain Name?

In a few days I have to reinstall a Windows Server 2016 Essentials instance on new hardware and would like to avoid an annoyance that cropped up in the initial install a few months back. To make a ...
SQLServerSteve's user avatar
3 votes
1 answer
1k views

Our website is not resolving from our LAN because of LAN DNS configuration

We have a LAN/WAN network with a Windows domain name (ourcompanyweb.org) that matches our website url (http://ourcompanyweb.org) which is hosted externally. When I ping our website (of the same name) ...
Mark's user avatar
  • 79
0 votes
1 answer
834 views

Postfix is appending myorigin to non-FQDNs despite "append_at_myorigin = no"

I have postfix and a local LMTP server running. In my main.cf, I have append_at_myorigin = no. When I run postconf|grep append_at_myorigin I get that this value is no. But for some reason, postfix is ...
ATLief's user avatar
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1 answer
768 views

How do we configure an ALB with Elastic IP's to only resolve to our FQD

We have a situation where we have a website, www.mamapedia.com which is accessible both by the ALB address and the Elastic IP's assigned to the ALB at any given time. This is problematic and is ...
Jacob Peebles's user avatar
0 votes
2 answers
2k views

Is it possible to add FQDN to Server behind NAT or to a NAT itself?

I have multiple identical servers behind a NAT. I use the same IP and just change up the port to move between the server via port forwarding.The issue is that i am using self-signed certificates and ...
MoonEater916's user avatar
2 votes
1 answer
2k views

Cannot Set Up Naked Domain on Azure CDN

What I am using: Azure CDN: Premium Verizon DNS: DnsMadeEasy I am struggling to setup all endpoints of my domain on Azure CDN; I am able to set up endpoints with a prefix to my domain (i.e prefix....
SJC's user avatar
  • 211
2 votes
1 answer
6k views

How do I properly configure a FQDN for sendmail to work with PHP mail()?

I'm sure variations on this question have been asked and I apologize if this is a duplicate, but I just can't seem to find something that works in my situation without breaking something else. I'm ...
armadadrive's user avatar
0 votes
0 answers
34 views

Require domain name and DNS should resolve proper host names on windows 2012

I have installed Siebel ip2017 on Google cloud free tier environment for self study however it is failing in configuration as it require FQDN( Require domain name and DNS should resolve proper host ...
Ganesh's user avatar
  • 1
3 votes
2 answers
11k views

Assigning a hostname of the fqdn assigned to a dhcp client with dnsmasq?

I'm aware that you can assign static DNS entry names by doing the following in dnsmasq.conf: address=/wiki.leerdomain.lan/192.168.1.200 ptr-record=wiki.leerdomain.lan/192.168.1.200 and then ...
leeand00's user avatar
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2 votes
0 answers
342 views

File Server - Hostname vs. FQDN

I have a problem with a File Server at Microsoft Windows Server 2008 R2 Operasion System. When my user browse a network share with FQDN she can't see the files, but if she browse it without FQDN (only ...
Norbert Kiss's user avatar
0 votes
1 answer
1k views

What is the correct syntax declaring FQDN in host file for CentOS 7? [duplicate]

First, I know how to declare FQDN but, I just want to know are they the same thing: I have 2 VPSs running using Centos 7. When I look up at the /etc/hosts file: I found the entry of the host file for ...
MaXi32's user avatar
  • 367
0 votes
0 answers
38 views

.bit domain on Nginx CentOS

At the moment I'm attempting to add domain.bit as my server_name in Nginx which I've done successfully, however, when forwarding the domain to the server IP or even pinging the domain it's failing to ...
user8426498's user avatar
0 votes
0 answers
238 views

Service returning Kerberos error but only when using FQDN

I have an issue that was brought to me by another in our office. He is troubleshooting a service our software uses with customers environments that try's to make a connection to SQLServer2 by use of a ...
Eddie Studer's user avatar
2 votes
2 answers
822 views

Can you use a second level domain-name as a FQDN? (e.g. hostname.com)

I've been doing it for a while and it seems to work ok, but I thought I'd check what good practice is as far as FQDN. Right now my server is setup with (lets pretend) the hostname myhostname and I ...
mijac's user avatar
  • 21
3 votes
2 answers
6k views

Why do I need an FQDN for a Hypervisor used only for running in house VMs for software testing?

I'm testing ProxMox, and during installation it asks for an FQDN. I've entered test.local, and it accepted it but I suppose I would have to enter something like cluster1.companyname.com, and then ...
fpjxmqjtaw's user avatar
-1 votes
1 answer
2k views

When do I actually need a FQDN?

I've been reading the guides on linode about setting up a server to host websites. One concept that bothers me most is FQDN. From what I've read, FQDN is very important and it MUST be set. In my ...
shenkwen's user avatar
  • 199
2 votes
1 answer
1k views

Setting FQDN with external domain name

I have a Centos 7 server which has tens of domain names and IPs. The IP addresses are pointing to my server. Each domain name is pointing to its own IP via A record. I want to configure my FQDN in ...
AFA Med's user avatar
  • 637
1 vote
1 answer
1k views

Puppet master with different hostname/fqdn

I'm trying to use a puppetmaster for servers being both on an LAN and outside of a LAN. Here's the setup : I have 3 servers behind a router and a VM on Google Cloud. The puppet agents connect to the ...
J.F.Gratton's user avatar
1 vote
2 answers
6k views

Bypassing SSO property on oVirt 4.0

I have upgraded oVirt engine from 3.6 to 4.0, after the upgrade i could not access the webadmin portal, the welcome page displays this message: The client is not authorized to request an ...
ahmedjaad's user avatar
  • 137
-1 votes
1 answer
5k views

Powershell script to find and delete DNS records across multiple zones

We have multiple DNS zones, and what to find static DNS records that no longer respond to pings and delete them. I've written a PS script, but I'm having two problems. 1 - test-connection fails ...
Dave Davidson's user avatar
0 votes
1 answer
5k views

What's the difference between FQDNs and Hostnames [duplicate]

First of all, I wanna say that I know how DNS Servers work and also I know about the records in a DNS Zone File! I'm not an expert but I have some knowledge about them. I'm confused! why?! because I ...
RSTAR's user avatar
  • 19
0 votes
2 answers
141 views

Exchange 2007 FQDN Issue

I am hoping to get a couple ideas regarding an issue we have come across. Exchange 2007 server was setup and has a FQDN of servername.domain.local which is obviously a local domain name. The server ...
Sabyre's user avatar
  • 43
33 votes
2 answers
59k views

Why should I use an FQDN instead of the server's IP address?

In my work with servers I have come across in configuration files where you should enter the address to an external server. I have seen some use the server's IP address directly, but I have heard many ...
Emil Rowland's user avatar
4 votes
1 answer
3k views

net use fails with system error 67 with FQDN

I search for help with a confusing error with Windows 7 mounting a network fileshare. The problem is that on machine A a mount with the FQDN fails (net use system error 67) while the same command ...
bluxx's user avatar
  • 41
-1 votes
1 answer
239 views

FQDN for server with various domians [closed]

I have a question regarding setting the FQDN on a server, well, technically, a vserver that serves a variety of domains. I have understood that the FQDN is a globally unique address that points to a ...
hurrtz's user avatar
  • 103