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Questions tagged [reverse-dns]

30 questions
6
votes
3 answers

IP doesn't support rdns needed for email server

I'm setting up an email server for my business and personal use. I have a public static ip address from Cincinnati Bell (now altafiber). I tried getting them to setup/delegate reverse dns lookup via ns record so I could host all my email domains,…
b.sullender
  • 183
3
votes
2 answers

How to find dns entries for IP-address

I am trying to do a reverse DNS lookup (find DNS-entries for a specific IP-address). A search gave me the answer to use dig and nslookup, but these tools do not work for me. E.g. I ping superuser.com, but none of the commands give me the…
Alai
  • 83
  • 1
  • 1
  • 5
2
votes
1 answer

How to configure a 10. network in bind? (PTR)

I'm trying to configure a zone for a 10.0.1.0/24 network. I have rfc1918 zones defined, but then I commented out 10.in-addr.arpa network, since I'm neading it. I then configured a db.1.0.10 file (reverse for 10.0.1.0/24 network)... But then had to…
Ninguém
  • 43
2
votes
0 answers

Is there a way to get NFS to refresh its reverse lookup without restarting it?

NFS server for some reason doesn't seem to acknowledge that avahi/mdns will resolve an ip address unless NFS is restarted after avahi is already running. I have my exports specified by hostname (with .local appended), and the NFS client keeps…
Catskul
  • 1,181
2
votes
0 answers

What does strings like "com.google.process.gapps" mean?

I've seen things like com.google.process.gapps in a lot of places, like Android and Flatpak, etc. What does it mean? It looks like a domain reversed.
user936203
1
vote
2 answers

How to mask reverse lookup for domains?

is there a way to block reverse lookup sites so people can't see the other sites hosted on an IP? Thanks.
Chad
  • 11
  • 2
1
vote
2 answers

Should nmap still be sending reverse DNS record requests when I set the -n flag? If so, why?

I am using Tcpdump to read packets sent by nmap. I want to totally disable reverse DNS, so I don't have any packets that look like: . > _gateway.domain: . . . *.*.*.*.in-addr.arpa. (data_length) However if I set the -n flag in foreign…
zeroclaim
  • 21
1
vote
1 answer

how do you do find out what domain an ip address is associated with?

When I do: ping www.google.com it comes back with a response PING www.google.com (172.253.122.147): 56 data bytes So this means www.google.com resolves to 172.253.122.147. What command(s) can I run to determine the reverse (i.e. given…
user1068636
  • 143
1
vote
1 answer

What is the standard for assigning rDNS to unused hosts?

In a range with unused hosts, is the standard to set the rDNS to a generic default one within the network (such as the IP address dot the company's domain name) or is rDNS not meant to be set for an unused host until manually done otherwise as soon…
William
  • 503
1
vote
1 answer

How to find all IP having a PTR-DNS-Entry for a domain

How to get a list of all IP having a PTR-record for a particular domain, e.g. mail.example.com Goal is to have a list of IP that x.y.z.a x.y.z.b x.y.z.c are claiming to serv mail.example.com.
frlan
  • 746
1
vote
1 answer

DKIM and Reverse Dns with sub-domain of onmicrosoft.com

When you sign up with Outlook 365 you get allocated a sub-domain like contoso.onmicrosoft.com. If you send an email from user@contoso.onmicrosoft.com should it not automatically be signed with DKIM or do you need to do anything extra? Emails are not…
sgmoore
  • 6,599
0
votes
2 answers

Reverse DNS Zone not working properly BIND9

I am using the 10.0.0.x scheme for my LAN. I have a Raspberry Pi that hosts certain services, including DNS. I am running into a problem with what I think is my reverse zone. The RPI is on 10.0.0.21. My domain is example.tk. When a client requests…
ahyattdev
  • 101
0
votes
1 answer

How do I do remote logging on DD-WRT with rDNS?

Here's what I want to do: I plan on setting up VPN on the router so that I can change the router settings remotely: http://www.howtogeek.com/51772/how-to-setup-a-vpn-server-using-a-dd-wrt-router/ Next, I want to be able to view logs to see who (on…
threehappypenguins
  • 311
0
votes
1 answer

I need a DNS longer that 40 characters

I try to debug my reverse DNS request subroutine, and I need a DNS that's longer than 40 characters, because apparently that's how many bytes Dnsapi reserves in memory. So I want to see what happens when NameHost in a PTR structure exceeds 40…
Chris
  • 329
0
votes
1 answer

How do I setup a custom hostname for my IRC daemon?

I have a registered domain and I want to make irc.mydomain.com the domain which any public user can access through port 6667. I'm currently running ircd-hybrid but it's only setup to accept localhost connections. What's necessary on my end from the…
meder omuraliev
  • 1,959
1
2