Reverse DNS And PTR Records
Dec 7, 2008
We recently decided to move all our DNS to a service called DNS Made Easy and also our sever box. We setup what they call Vanity DNS with ns0.domain.com and ns1.domain.com so our clients did not have to change their nameservers.
Our records for all domains are now setup and looks like they are beginning to propagate. Here's where the question is:
IP - 1.1.1.1 is for domain1
IP - 1.1.1.2 is for domain2, domain3 and domain4
IP - 1.1.1.3 is for domain5
All domains have MX records pointing to a either Google or Mailtrust.
what is the best way to setup Reverse DNS and PTR's for this setup and what should we ask our ISP to do for Reverse DNS in this case.
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Feb 18, 2008
I signed up for a dedicated server this weekend.
I'd like to know if its possible to change or even delete the reverse dns record from
the ip address from my server ?
Is it possible to hide the "dig -x ip" results?
I don't want them to know in which provider i am....
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Oct 23, 2008
is this the proper forum to ask for help with a reverse DNS issue on my co-located server?
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May 24, 2008
i have a dedicated server with 2 ips and i am planning to run a nameserver, mailserver and webserver on the same server. i heard that reverse dns is important. how do i do that?
My questions are...
1. will it work if i setup the reverse zone in my server? or should i ask my host to setup reverse ip for me?
2. Do i have to setup reverse entry to mailserver or domain or nameserver? which is important to have reverse ip.
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Jun 9, 2008
i had some problem with my smtp server because of my PTR record
i create a new reverse zone and add a ptr record point to my mail.domain.com from my ip(38.100.214.200)
but when i check it from online tools, all of them except zoneedit.com say me that my server has no ptr record.
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Apr 2, 2007
I'm with a German (dedicated server) Provider and have the ability to personalize the Reverse DNS settings through their CP.
No US provider had allowed me this setting before, so I'm clueless about it. Whats Reverse DNS, what if I change the current setting to like - rdns.mydomain.com? Whats the use?
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Jul 13, 2009
I have a domain(ex. mydomain.com) hosted on a shared windows server, I also have a dedicated Linux server with a different company.
What I would like to do is have the mail be handled by the Dedicated Linux Server(cPanel/WHM), while the site is running on the shared windows server.
I understand I would need to change the MX Records for the domain on the Windows Server to point to the dedicated server's mail server IP Address (mail.SERVER IP ADDRESS.com ?), but do I also have to create an account on the linux server to handle the mail (example forwarders/auto responders).
If that is the case, how do I tell it to take care of all the mail coming for the domain mydomain.com?
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Mar 5, 2008
SRV records on a WHM server, is it possible? If so, is there any documentation on this?
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Oct 31, 2007
I have two hosting packages with 1and1: a shared hosting package and a new dedicated server. I am transferring my domain from the shared package to the dedicated server.
However, I have not yet initiated DNS propagation. Files, databases, FTP accounts, subdomains, cron jobs, etc. have all been added to the new server. The problem is, I'm not ready to setup the email accounts on the dedicated server. I have about 20 email accounts on my domain and I will have to show each user how to setup the new account with their email client of choice and transfer any important email to the new account using IMAP. Copying the mailboxes with SSH is not an option since I don't have root access to the shared server. Email is not stored on that server anyway (I think 1and1 uses perfora.net servers for load balancing email and databases). Plus, I'd rather handle all of the email stuff after propagation is completely finished.
So here's my question... How can I make mail sent to example.com go to 1and1's email server? I looked up my current MX records and they are mx00.1and1.com and mx01.1and1.com. I tried adding the following MX records to my server's DNS table (in Plesk):
Mail exchanger: mx00.1and1.com
Priority: 0
Mail exchanger: mx01.1and1.com
Priority: 5
(This one was already there)
Mail exchanger: mail.example.com (my domain)
Priority: 10
But when I send an email using SMTP on the new server, it is sent to a test inbox on the new server instead of the shared server. Is the MTA not looking at the DNS records on the same server or are they cached somewhere and I have to wait a while (it's already been several hours)?
Second question... I still want 1and1 to think that I'm hosting my domain on the shared hosting package so that my email accounts won't be deleted. For this reason, I can't transfer my domain name in the 1and1 control panel until the new email accounts are completely setup. Can I just point my registrar (Go Daddy) to ns.example.com (my domain) instead of ns.1and1.com? DNS service is running. I'm just afraid this may route any traffic within the 1and1 network to the shared server instead of the new one.
I probably haven't been very clear about everything but I'm still very new to server management.
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Jul 22, 2009
some clarification with regards to Reverse DNS.
An example ip: xx.xxx.xxx.xx is owned by A Company via a DC. The they have their name allocated to the netname and description when i look up their ip address.
I have my ip xx.xxx.xxx.xx this is me and it currently contains my DC's name throughout when i look it up as the description and netname...
Both are from the same DC however the other company has their name allocated to the ip address and i would like to do the same. Does this require Reverse DNS? It dosent involve domains surely does it?
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May 26, 2009
if my main site hosted in usa and reverse proxy server located in UK or Canada. will my site load still quickly or be slow dramtically? both use linux and apache. or canada user will quickly load my site or still slow? how about usa customers?
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Jun 7, 2009
Is possible to config a reverse proxy to connect with the website(hosting at bluehost) in VPS?
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Nov 2, 2009
I was issued two IPs for my DNS server.My DNS server is up but when a domain is using the new dns server.I did a dns check and was told there is no reverse dns.Can I do it myself by setting on the DNS server or I need to get my ISP who provide me the IP to do it set the reverse dns?
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Jul 18, 2008
how to set rdns manually on dedicated server?
i dont have rdns control to set.
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Mar 10, 2008
Who are the DNS service providers that offer reserve dns setup.
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May 5, 2008
if I do a reverse lookup on my server's IP it returns a host assigned by the data center. So is this something I should even be managing too or is that always left up to the DC? I run my own DNS for the forward lookup zones.
Also just a technical question, when you do a reverse lookup, how does it know where to look to get the host? I'm not sure I fully understand how these work.
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Mar 9, 2007
what are the techniques used to find out the domains pointing to a particular IP?
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Jun 26, 2007
I am having trouble pinning down exactly what I am doing wrong with reverse DNS at HE.net on a /27 subnet.
Example host:
65.19.156.29
master1.ipcoast.net
It looks to me like HE.net has properly deligated the subnet:
# dig -x 65.19.156.29 @ns1.he.net.
;; AUTHORITY SECTION:
subnet0.156.19.65.in-addr.arpa. 86400 IN NS ns2.ipcoast.net.
subnet0.156.19.65.in-addr.arpa. 86400 IN NS ns1.ipcoast.net.
And I have the zone file on both of those servers. But still won't resolve from outside coming in.
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Apr 30, 2007
I researched a few options and have come to this conclusion use Ultramonkey (LVS + HA Proxy) -> apache2 mod_php/ mod_python (serve php / python)
-> lighttpd (serve static files)
-> mongrel (ruby server)
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Apr 13, 2007
I have a VPS with the hostname myhost.domain.com, with four IP addresses, one of which is assigned to a shared hosting account (using WHM/cPanel) at sub.domain.com.
For email delivery purposes (I'm sending e-commerce receipts (that MUST be delivered) from PHP apps running on sub.domain.com), do I need to set up reverse DNS entries that say their IP addresses belong to myhost.domain.com, or to sub.domain.com?
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Sep 17, 2013
I am trying to do Reverse DNS and PTR of my server, but it the documentation from cpanel.I followed the Documentation till Editing the Reverse DNS Zone from here. URL... My Server has IPv4, the problem is the First and the Third Step, and in that result image shown on cpanel site, it has shown like 1 , 2 ,3 so Do i have to write their 123 in even in my cpanel or write the IP or reverse IP.
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Jun 26, 2009
I'm setting up my dns records for a backup mailserver and setting up another ns record in case of server / datacentre problems.
My question is, do I need to specify the ip address of the external hostname and the external namserver in the local dns record?
e.g mail.mydomaim.com in A **.***.**.**
then add mail.outside-domain.com in A **.***.**.**.
I dont think its necessary but want to double check.
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Aug 1, 2006
I have added a new ip for my nameserver3 and now it is pingable... But when I try to point a domain it says something like "check SOA record for your nameserver3" etc...
How can I add SOA records for this new nameserver via whm or?
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Nov 7, 2009
DigBuddy is an email deliverability and MX monitoring service. Customers sign up and input all of the email addresses at their domain and our monitoring system will check to make sure that these email addresses are able to receive email by logging in and attempting to send an email without actually sending one. It also checks the DNS, SPF records and a bunch of other stuff so our clients can be assured that they are able to send and receive email to a variety of networks without issue.
We need to set up monitoring servers on a number of networks across a number of countries that can be used to send and receive email. Basically all we need is a VPS with 512mb of ram and 19 IP's. It also must have an unblocked SMTP port 25 and the IP's must have a neutral or better senderbase score. We also need to make sure that the IP's have proper forward and reverse DNS entries.
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May 6, 2008
Have been reading around the net trying to figure out how to do this and arrived here. Thought I would see if someone could advise me on how to change some MX records.
At the moment there are 4 records :
A @ IP Address: xxx.xx.xxx.xx
A www IP Address: xxx.xx.xxx.xx
A mail IP Address: xxx.xxx.xxx.xxx
MX @ Host Name: xxx.domain.com
Priority : 10
I need to add two MX records. Do I delete the existing record?
and do I set them as MX @ Host Name or do I need to do something else?
I did manage to set some MX records a long time ago but have completely forgotten how to do it now
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Jul 30, 2008
I have a domain registered with Dotster and my NameServers point to Verio who is my webhost. My MX Records at Verio point to Appriver who handles my email. I'd like to get Verio totally out of the picture and just host my site at Dotster and still keep the email at Appriver. However, I'm not quite sure the order in which to change the various settings.
Do I just change the Name Servers at Doster to point to Dotster instead of Verio and then use Dotster's DNS to point the MX Records to Appriver? Would I then disable the MX Records at Verio? What about propagation of these changes...would I lose email traffic?
Do I need to change the TTL? I'm really not sure about the order of the steps.
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Apr 5, 2008
I have been considering upgrading to a dedicated or vps server for some time. In my research I ran across a comment on another forum that didn't seem correct and was hoping someone could clarify.
This person upgraded to dedicated and stated he failed to verify his mx records accuracy and was the reason his emails where not being sent out properly.
My question is, does upgrading from shared to dedicated require you to make some kind of change to your mx records? If so, what change needs to be made? I would think upgrading to dedicated would have no effect on your mx records for your email.
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Mar 31, 2008
on one server we have changed hostname.. and now we receive mail delivery failed as this:
You cannot setup a domain that is the same as the servers hostname
"
SMTP error from remote mail server after end of data:
host mail1.**.com [**.**.***.**]: 557 Your domain sun.***.net does not have a valid MX DNS record.
"
We have check under dnsstuff.com and for sun.***.net there aren't mx dns set
sun. is setting, under whm, into account www.***.net
we have try to add a new account for sun.***.net but system said
"You cannot setup a domain that is the same as the servers hostname"
So, How to set correctly MX DNS record for hostname?
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