Questions tagged [ptr-record]
PTR is a type of record in DNS system used for reverse DNS lookups (IP address to hostname)
37
questions with no upvoted or accepted answers
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When sending an email to Gmail, I get a delivery error email back to me
I have a VPS and when I send an email, I get a delivery error email with one of the following (the email is not in the spam, it is not being sent at all):
all hosts for 'gmail.com' have been ...
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2
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1
answer
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BIND9 can't resolve in-addr arpa
I am trying to configure my nameservers to resolve a PTR zone for which we are authoritative. I have several forward zones that work just fine, but when I try to resolve a PTR, the result does not ...
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1
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Receiving mail from Gmail delayed - PTR issue?
One of our partners receives our mails with noticeable delays. The same mail sent to two addresses under their domain are sometimes delivered at their server hours apart (checked in the actual server ...
- 1,006
2
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0
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RDNS_NONE from spamassassin result, when it should be positive
When trying to do a spam test on mail-tester.com, SpamAssassin is giving me RDNS_NONE result.
Can't quite figure out why!
The result I get:
-1.274 RDNS_NONE Delivered to internal network by ...
- 31
2
votes
1
answer
537
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PTR Record Troubles
I am having a hell of a time getting our PTR record right.
Our current PTR zone looks like this:
$ttl 38400
@ IN SOA ns1.domain.com. admin.domain.com. (
1268669139
10800
...
- 570
2
votes
2
answers
110
views
Possibility to synthesise resource records in BIND?
is there possibility to synthesise resource records in BIND, similar as in KnotDNS with following command?
synth_record "(forward`|reverse) <prefix> <ttl> \<address>/<nn>";`
...
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1
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0
answers
110
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Why is bind9 not responding to reverse zones to anyone?
There is BIND 9.11.5-P4-5.1+deb10u2-Debian (Extended Support Version) <id:998753c> for the local network, it works as a caching server and holds several domain zones.
Recursive requests are ...
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0
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how can i reroute incoming connection without passing it from my server
here is whats happening
i ran a openvpn server on a server outside my coutry and tunneled it using stunnel from a server inside country(because of vpn restrictions i cant connect to it directly)
but ...
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1
vote
3
answers
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Subdomain, PTR and MX Record Confusion
I am lost in DNS and rDNS (PTR) record setting for the following scenario:
I have my main website example.com running in Digital Ocean at IP 192.0.2.4
In Digital Ocean control panel I have the ...
- 11
1
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3
answers
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450 4.7.25 Client host rejected
On #Exchange2013 I am getting the error message as follows,
generated the error '[{LRT=};{LED=450 4.7.25 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.130]};{FQDN=};{IP=}]'.
I am ...
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1
vote
0
answers
121
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FCrDNS for a mail server that also runs other services (http, ftp etc)
I am learning how to administer productive internet-facing machines and services, and towards that end setting up mail, web, and a couple other services, all on the same box (budget constraints and ...
- 111
0
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0
answers
19
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IPREV check failing on multiple ipv6 addresses
I'm using a Raspberry Pi 5b running Ubuntu to host a Postfix and Dovecot mailserver from my home. After setting up various sender authentication mechanisms on the server eg. SPF, DKIM and DMARC - and ...
0
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0
answers
262
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Gmail not detecting PTR record from vultr server
I have an SMTP server running on a vultr VM. I've set up the rDNS to point to my mail domain name mail.idimitrov.dev. The DNS setup points to that machine on ipv4 and ipv6 for mail.idimitrov.dev and ...
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0
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0
answers
328
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GCP/Google DNS: delegate a subdomain and set PTR records on VM instance
I am having a hard time figuring out what steps are needed to set a PTR record on a VM since I want to run a mailserver on it. My scenario looks like this:
(unfortunately because of planned migration)...
- 1
0
votes
0
answers
805
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DNS PTR lookup deprecated?
When I use dmarcanalyzer to check my domain I get the message:
Warning : You shouldn't use PTR lookups as they are deprecated
My record looks like this:
v=spf1 ptr:samplemail.com ip4:191.13.174.145 ...
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0
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0
answers
185
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iprev check for multiple ipv6 addresses
Can I add multiple PTR records mapping multiple IPV6 addresses to the same domain, and add multiple AAAA records mapping the same domain to to the same set of IPV6 addresses, to let pass the iprev ...
- 109
0
votes
1
answer
70
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Is it possible to receive email for aliases of multiple domains on a single KVM?
Tl dr; Is it possible to receive email for aliases of multiple domains on a single KVM?
I had a Digital Ocean server with multiple websites hosted on it, and needed email aliases of more than one of ...
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0
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0
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1k
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Do I need a PTR (rDNS [Reverse DNS]) record if using an SMTP mail relay (Mailgun, Mailjet, Send Grid, etc.)?
My cloud hosting provider wants to charge for setting up a PTR record, which I'm not up for.
As I use Mailjet as an SMTP relay server, do I even need to have it setup? Or will all my emails reverse to ...
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0
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1
answer
39
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PTR recored Issue
We have 2 Mail servers ( Internal and External) the External is hosted by ISPA with ip address of 62.xxx.xxx.xxx, we use to have the internet from the same ISPA, and the PTR record is already setup.
...
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0
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0
answers
226
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Should PTR for domain controller be automatically created?
Reverse look up for my domain controller doesn't work.
Invoke-Command -Credential $Cred -VMName $vmname -ScriptBlock {Install-WindowsFeature DNS -IncludeManagementTools}
Invoke-Command -Credential $...
- 140
0
votes
1
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647
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Google cloud load balancing and reverse DNS
I have a domain example.com pointing at a Google Cloud load balancer. Requests get served by one of several Compute Engines behind the load balancer.
The load balancer ip is 1.2.3.4
Now when I send ...
google-cloud-platform
0
votes
1
answer
118
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Multi-view DNS PTR issues
I am seeing some problems with PTR zone resolution, and I can't quite figure out what is not configured correctly.
Summary:
1) I've been delegated authority for my PTR zone (246.237.204.in-addr.arpa,...
- 169
0
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1
answer
505
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bind9 on server locally for mail ptr record with cloudflare as name servers
I am using cloudflare's name servers for example.com with a cname for www - these are filtered through cloudflare.
In cloudflare, I have an mx record pointing to mail.example.com and a mail A record ...
- 23
0
votes
1
answer
3k
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Reverse PTR record lookup not working with dig
As mentioned here, having a Reverse PTR record is key for successful email sending and delivery from one's own server. In order to check if it's correctly set for my server, I tried:
dig -x 111.111....
- 739
0
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1
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233
views
how to properly configure DNS when server hosting one domain is sending mail from another?
i'm trying to figure out how to properly setup TXT and PTR records in the following case:
- one domain is hosted on the server 1stdomain.com on IP 1.2.3.4
- it uses remote mail server for sending ...
- 1
0
votes
1
answer
721
views
can not having a PTR record affect website performance?
I moved my ptr from my maindomain.com to my mail.maindomain.com. Now i could swear my website was faster before, but i can't prove it. Could not having a PTR record affect performance in any way? ...
- 129
0
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1
answer
1k
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How to Add Pointer Record in Reverse Lookup DNS Zone (Windows Server)
I want to add a pointer record in reverse lookup zone in windows 2012 Server. The pointer record should point to a delegated zone defined in a forward lookup zone.
I want to answer any DNS query: b....
- 121
0
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1
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1k
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Cant send mail due to PTR Records
I just installed sendmail on ubuntu 14.04 lts and configured a new domain. Somehow I must have overseen a config issue, as google mail is rejecting the message. looking at return message it tells me ...
- 2,172
0
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1
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1k
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DNS-SD only discovering services correctly after dig -t any
I have several DNS servers configured for DNS-SD. I am able to register services without issue, however when I try to browse I get errors.
I have been testing using dig:
Browsing a local or remote ...
- 101
0
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1
answer
295
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Dns filezone setup with mx and spf
I am trying to create a mail server. I bought the domain mastermails.info on godaddy.com. I am struggling with the setup of DNS. Whenever I change something in the MX record to make my server ...
- 11
0
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1
answer
738
views
Setting Up PTR to correct "Forged hostname" error
Our e-mails mostly get through fine, but here's an error I haven't seen before.
Diagnostic-Code: smtp;550 5.7.1 ... Forged hostname for 66.132.221.45 >which resolves as www.medialabinc.net but www....
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0
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1
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101
views
Google gmail block for no ptr of 4to6 ip address
When mail server got only ipv4 address and enabled 4to6 interface, gmail server block mail because of no ptr record of 4to6 address.
Why...?
Isn't 4to6 address not global standard...?
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0
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1
answer
170
views
DHCP and DNS on none AD 2003 Server PTR is updating but no A records
I have a strange issue, I have a DHCP and DNS server running in a non AD environment, on Windows 2003 server. I setup DHCP to update DNS A and PTR records even if the client doesnt request it, but I ...
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1
answer
151
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How to allow rDNS(PTR) record to point a specific domain?
Maybe it sounds too complicated, but I will do my best to explain. The problem is the following: some domain is pointing my servers IP address. How can I block that rDNS (PTR) record, so I can attach ...
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-1
votes
1
answer
298
views
PTR Record for Mail Server
Our email server is setup for Domain POP/ Mail Bagging with our ISP for receiving only. Our MX Record resolves to our ISP mail host address. We have 2 IP addresses (redundancy purpose), 1 from our ...
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2
answers
180
views
Setting up email server SPF without access to IP PTR
What is or is there a proper way to set up SPF without setting the IP's PTR?
because I don't have access and want to know if there's an alternative method
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-2
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1
answer
114
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ptr records for mulitple vhosts (www and mail)
My IP address is shared between my webserver and mail server:
www.example.com A 123.123.123.123
mail.example.com A 123.123.123.123
Setting up a PTR record for mail affected both of my mail and web ...
- 1
Related Tags
reverse-dns × 17
domain-name-system × 13
email × 9
bind × 6
smtp × 4
postfix × 3
spf × 3
gmail × 3
dig × 3
linux × 2
ubuntu × 2
email-server × 2
ip × 2
mx-record × 2
email-bounces × 2
fcrdns × 2
debian × 1
web-server × 1
openvpn × 1
load-balancing × 1
dhcp × 1
more related tags
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