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0
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1answer
30 views

Using PTR on SPF Record and Multiple Domain Pointing Single Server

Today I've checked my SPF is valid on some of the sites and invalid on some of the sites I've tested. Microsoft also couldn't see my SPF record for some reason while others can. (Sender ID ...
-1
votes
1answer
38 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 ...
1
vote
1answer
67 views

Is having the same PTR hostname valid for multiple ip addresses? [duplicate]

Currently I have the following setup with two hostnames and two ips: cheeze1.mydomain.com IN A 123.123.123.111 111.123.123.123.in-addr.arpa IN PTR cheeze1.mydomain.com cheeze2.mydomain.com ...
0
votes
1answer
30 views

CloudFlare and PTR records for reverse DNS

OK so I'm having a hard time configuring reverse DNS for my website protected by cloudflare. Since cloudflare is protecting my server, it's their IP and NOT the real server IP's that shows up when ...
0
votes
1answer
29 views

Trying to set PTR on CentOS 6.5

For the last 6 hours I've been trying to set a PTR for my server but I with no luck. Checking with host give me: Host 44.244.208.173.in-addr.arpa. not found: 3(NXDOMAIN) My /etc/named.conf includes ...
0
votes
1answer
53 views

Configuring Reverse DNS on Windows Server 2008, can't send email

I run a VPS on a Windows Server 2008 machine, and since I got it in January 2015 everything has been running fine, the server has IIS, DNS, and uses Mailenable for email exchange. I've been running ...
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votes
1answer
65 views

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 ...
2
votes
1answer
58 views

SMTP DNS Validation with multiple mail servers behind multiple Public IPs

I know when a Mail server receives an e-mail, it performs a "DNS 3 way check" (I think this is also sometimes called FCrDNS) as a simply test against spammers. The way I understand it to work is as ...
-2
votes
1answer
175 views

my host has no PTR record [closed]

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 ...
2
votes
2answers
224 views

Do I need to Set-up PTR record in SPF Setting?

I have set-up the RDNS from my hosting provider for the ip address to resolve to "maximus.example.com". After that, do I also need to add the PTR records to the SPF Text details in my DNS zone file as ...
2
votes
1answer
90 views

Is it possible to set a PTR record for Github Pages hosting?

Icelandic domains (.is) require that their domains support reverse DNS, which means configuring PTR records on the hosting server. Is it possible to set up a PTR record for GitHub Pages site hosting? ...
0
votes
2answers
135 views

PTR for Linux VM on Azure

I have a Linux (Ubuntu) virtual machine running on Azure and this machine runs a website that sends email to registered users. This emails are greylisted on some mailning services. After some ...
0
votes
1answer
157 views

Reverse DNS record can't point to Domain name but it can point to IP [closed]

I am using parallels plesk for hosting my websites, Some days ago I tried to send emails from my mail server and the mails were going to spam,So i tried spam assassin to detect whats wrong. Here is ...
2
votes
3answers
110 views

Is the Reverse PTR record fine

I've checked my email headers at http://mxtoolbox.com which says it is ok. But I'm not sure. MY server's FQDN is host.tariffplansindia.com and for my server's IP( 23.239.30.81) the reverse PTR record ...
0
votes
3answers
76 views

Appropriate PTR records for mail server [duplicate]

I realize this is a common question around here, but I'm having trouble understanding one part of it. I want to setup a mail server to send newsletters and other marketing emails for a few of my ...
-3
votes
1answer
1k views

How to add reverse dns record on cloudflare [closed]

I need to set PTR record on my cloudflare account, because all outgoing mails are going to spam. I do not see ptr record in my cloudflare account. Can I use txt/srv record instead?
6
votes
2answers
4k views

Reverse DNS records not registered when using DHCP

I've stumbled upon a strange behaviour with Windows machines, which seems to be fairly consistent between all Windows versions from Vista/2008 to 8.1/2012 R2; it doesn't happen instead when using ...
-4
votes
1answer
576 views

setting correct PTR record for domain and postfix email server [closed]

I have a problem where I recently figured out, that describes this output! What steps to do to set the DNS PTR record, is the IP in reverse in the name needed? The zone of my domain is: ...
0
votes
1answer
58 views

DNS issue mail server

I tried to find an answer to this one around with no luck so far. I am not a sysadmin, but I work with mailings and one of our server presents some issues. I do not have personal access to the server, ...
0
votes
0answers
305 views

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 ...
1
vote
1answer
59 views

PTR records are not valid. but they should be!! - PTR quandary

I have a perplexing problem from my point of view. Not a mail server expert though so here goes; Using mail-tester.com, done a spam test for my mailserver and it's telling my PTR record is invalid, ...
0
votes
1answer
398 views

reverse dns not propagated

I defined reverse dns zone for server muq.ac.ir in name server which responds to name resolutions for domain muq.ac.ir server. Then I add a ptr record for ip address 80.191.92.199 with value ...
2
votes
1answer
39 views

PTR Webserver and Appserver

I'm a little confused about the setup of a PTR record for reverse dns lookup. We are hosted at Rackspace and we have a front end webserver and behind that an appserver. Users don't access the ...
1
vote
1answer
92 views

The correct PTR record in DNS

I'm confused with my DNS records. I own a domain (e.g. example.com).I've set A record for my SMTP server (e.g. smtp.example.com) for outgoing emails. The email address is (e.g. ...
14
votes
4answers
4k views

Why multiple PTR records in DNS is not recommended?

I often read that using multiple PTR records in a DNS configuration is not recommended. However, the reasons are often vague, or not so obvious, naming: "it can cause problems", "can trigger ...
-1
votes
1answer
56 views

What is the safe as AAAA record [closed]

What is safe for AAAA record. Short or full format? I set this e.g.: 4a01:20:18:0:5:8:8:30 This is IP from mail server. But when smtp sending email out i see problems in logs. Gmail return email as ...
0
votes
2answers
2k views

Reverse DNS (PTR) for Email

We are hosting our website (http://www.redappleapartments.com) with a hosting company in Sweden. And we are using godaddy as our email provider. So, our smtp servers are smtp.europe.secureserver.net ...
0
votes
1answer
138 views

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 ...
5
votes
2answers
1k views

Are PTR records added only by the ISPs that provide and manage the IPs?

I am administering a network with many locations and work with multiple providers I checked out with my DNS provider to change the PTR records for one of the IPs, they replied: Dear Sir, We ...
0
votes
1answer
110 views

Do reverse entries for name-server, need to match the mailserver name?

I need to setup PTR for a domain and lets say my domain is domain.com and I have my email addresses like email.address@domain.com. I came over this mailing-list article that says: The reverse ...
0
votes
1answer
5k views

What steps to do to set the DNS PTR record, is the IP in reverse in the name needed?

I had the following error: <xxxxxxxxxxxxxxxx@xxxxxxxxxxxx.de>: host yyyyyyyyyyyy.yyyyyyyyyyyyy.de[33.33.33.33] refused to talk to me: yyyyyyyyyyyy.yyyyyyyyyyyyy.de (mxeue106) Nemesis ESMTP ...
1
vote
1answer
124 views

PTR record created, but not found

We are a small ISP, using linux DNS servers. Recently a client has asked us to create a rDNS zone for a specific IP address, which is used for a mail server. They keep getting message failures for ...
0
votes
1answer
97 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 ...
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votes
1answer
90 views

How to add PTR record in my DNS? [closed]

Im trying to add a PTR record but the option is not available. The only options I have are listed in the image below. Which record type do I have to use to add PTR record?
0
votes
1answer
44 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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votes
1answer
794 views

hotmail doesn't accept my emails

I have installed and configure postfix as a mail server in ubuntu 12.04. I can send emails to gmail with no problem but I can't send them to hotmail when i enter in putty dig @ns1glr.name.com ...
0
votes
1answer
355 views

PTR record not valid for all domains

We have an issue sending emails to certain domains, namely Time Warner and Cox. Last week, we decommissioned our Exchange 2003 server and now our Exchange 2010 server is doing all of the transport for ...
1
vote
2answers
71 views

Assist in diagnosing reverse dns mismatch

We seem to have an occasional issue, whereby mail is bypassing our first three MX records, and going to our 4th MX record. This is purely a backup, and we think that the reason it is skipping the ...
0
votes
1answer
493 views

issue involving ptr record when sending email on digital ocean server

The Issue We have a website that sends email using php mail function and sendmail. We frequently get email rejected response emails from several destination email servers saying that we have an issue ...
5
votes
2answers
263 views

How to determine which DNS server has the authority to set rDNS (PTR records)?

or to re-phrase... How to determine to whom authority has been delegated to set rDNS? Background In a multi-tier environment, where a block of IP's is assigned, then further split and assigned ...
0
votes
2answers
109 views

PTR record only added on IP owner side? no in DNS Zone files?

i wanted to add PTR record, to my domain so the reverse IP is in PTR points to my nameserver. So on my hosting IP provider i set my nameserver for the IP and it now shows in PTR (i used this ...
0
votes
2answers
2k views

Gmail does not accept mail from a new server

I am setting up a new server and discovered that Gmail does not accept emails from this server. I checked Exim logfiles and found the following: Our system has detected that this\n550-5.7.1 message ...
2
votes
1answer
499 views

How to match PTR record with a different domain?

I am a bit confused about PTR records and how to set it up correctly. This is the current setup: A website: domain.com, on this website I have a mailaddress info@domain.com. On domain.com I have an ...
-4
votes
2answers
224 views

pointing different records to a CNAME record

I am trying to figure out the following and want to know "why" this is or is not possible. May an MX record “point to” a CNAME record? May a CNAME record “point to” a CNAME record? May an A record ...
0
votes
1answer
63 views

rDNS entry on a separate name server from forward dns - is this okay?

Our reverse DNS lookup is delegated to our name server (ns.example1.com) by AT&T, who leases us our IP address (1.2.3.4) and our forward DNS lookups were on the same name server (ns.example1.com). ...
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vote
2answers
624 views

delegating /24 and /64 reverse zones

I'm sure I'm overlooking something so simple, but I'm just not seeing it... I'm trying to delegate the /24 and /64 reverse zones for our Test network to hosts within the Test network. I'm seeing the ...
-2
votes
1answer
471 views

How to Prevent email going to Spam [closed]

I have changed web hosting from hostgator to servermania. I setup my email using ISPConfig 3 control panel. Now, my email was flag as spam by gmail. When I test my email using test@allaboutspam.com, ...
0
votes
1answer
149 views

rDNS setup to prevent emails appearing as spam / phishing messages

We are trying to send email without the email appearing in the spam folder. The emails that we are sending is solicited bulk email. The main problem is that the emails are appearing as phishing ...
0
votes
2answers
695 views

which one is best for PTR record: domain or hostname

I have a VPS with the following IP: 82.197.45.124 domain: example.com hostname: server.example.com PTR record: 82.197.45.124 > server.example.com There is no an "A" record for "server" ...
2
votes
2answers
298 views

A and PTR records and redundant Internet connections

Want to set up PTR record(s) to handle the following: Site with mail server (Exchange 2010) has three Internet connections, with the firewall handling load balancing. I know that if the Internet ...