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Questions tagged [reverse-dns]

Reverse DNS lookup is the determination of a domain name that is associated with a given IP address using the Domain Name System (DNS) of the Internet.

Reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name that is associated with a given IP address using the Domain Name System (DNS) of the Internet.

Computer networks use the Domain Name System to determine the IP address associated with a domain name. This process is also known as forward DNS resolution. Reverse DNS lookup is the inverse process, the resolution of an IP address to its designated domain name.

Source: Wikipedia.

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reverse file not working . gives error message "bad dotted quad"

here is my zone file $TTL 86400 @ IN SOA master.git-gotech.net. root.git-gotech.net ( 0 ; serial 3600 ; refresh …
jessica mbenji
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Resolve-DnsName resolves hostname of IP, but nslookup fails

There are some IP address that nslookup can't resolve (both on Windows and Linux). Problem: I can find the IP of the hostname, but reverse lookup fails. PS C:\> nslookup.exe somehost2 Server: corpdns.mydomain.com Address: 10.248.2.1 Name: …
aviro
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Unsure on how to fix PTR

I am trying to setup a custom email for a company website. The only issue is that when sending an email to a gmail account, I get the following back: The mail system : host gmail-smtp-in.l.google.com said: The IP address sending this message does…
Learner
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Nslookup server: unknown between VLANs/networks?

I have several VLANs/networks - eg.: 10.0.10.0/24 : Servers 10.0.20.0/24 : Pcs My DNS server is called "DC1.mydomain.local" (IP 10.0.10.11) and I have a PBX server called SVPBX (IP 10.0.10.21). Inside the Servers VLAN - If I type Nslookup SVPBX, I…
MojoDK
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How to set up external DNS?

I have few appliances that are HTTP/HTTPS managed and assigned PUBLIC IP ADDRESSES and I need to set up DNS name resolution so I can access externally by it's name. How to set up external DNS?
Nroot
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Doesn't receive email from other mail servers

I really need your help. I am trying to set up first time my own mail server using Postfix, Dovecot IMAP/POP3 and MySQL backend on a Ubuntu server. I can successfully receive and send mail to my local server, However I can only send mail to to other…
sonubreeze
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My Email Strightly goes to gmail spam/just folder ( DKIM,SPF,DMARC is okay )

( it's not duplicate , its related to rDNS , please don't flag it as duplicate or give me the link of related one ) i have a problem, my emails from my mydomain.com straightly goes to spam folder in gmail, other service providers are okay. i have…
Hamed Kazemi
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How to create RDNS (Reverse DNS)

How to create a RDNS (Reverse DNS) in centos or Ubuntu [PTR record] I searched a lot in Internet and didn't find any solutions. I got a idea it can be done by BIND or BIND9. In some forum i seen some peoples wrote "RDNS cannot created by user, it…
Rajeev Ranjan Sharma
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reverse dns configuration not working

I am configuring my reverse dns server, after installation then I run the following: nslookup 110.74.133.89 Server: 192.168.101.4 Address: 192.168.101.4#53 ** server can't find 89.133.74.110.in-addr.arpa.: NXDOMAIN host…
alphaop
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Can I setup the PTR records of reverse DNS with different IPs?

I am very new into the Linux world. I'm trying to configure 3 Authoritative-Only DNS servers. I got everything set up, except for the zone of in-addr.arpa. I have the following servers with the respective public IP (I'm using random numbers): www -…
Daniel Muñoz
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my host has no PTR record

when i check my host i get this host myIP xx.xxx.xx.103.in-addr.arpa has no PTR record So i dd this to my /var/named/domainname.com.db myHostname. IN A myIP xx.xxx.xx.103.in-addr.arpa. IN PTR myHostname. I restart BIND DNS Server but when i…
Abdelmoula Nami
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nslookup does not work on certain IP address

when I gave nslookup 74.125.236.200 Server: 192.168.5.11 Address: 192.168.5.11#53 Non-authoritative answer: 200.236.125.74.in-addr.arpa name = maa03s17-in-f8.1e100.net. Authoritative answers can be found from: 125.74.in-addr.arpa …
VP7
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How Do I Set Reverse DNS for Rackspace Next Generation Cloud Servers?

The dashboard for Rackspace's next generation of servers doesn't have an option to set the reverse DNS for a cloud server. You have to use the Rackspace Cloud API. How do I use the API to set up the reverse DNS for my server?
Sam Michel
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Bind: (Reverse) zone not loaded due to errors

Using Ubuntu Server and bind9... Here's the error: enter image description here Direct zone: enter image description here Reverse zone: enter image description here Named.conf.local: enter image description here Named.conf.options: enter image…
Sergio Diaz
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Point a Server Using Domain From Windows Server 2016

we have a server machine with Debian 9 installed. It has an internal knowledge base website which the domain is kb.domain.com with the local IP of 192.168.1.95. Currently we have a new installed Windows Server 2016 with DNS role. I don't know if…
altela
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