Issue rDNS issue with cloudflare

[WordsBitcoins]

Hi All,
I have set up an SMTP server.
My site is connected by Cloudflare service with a Plesk control panel.
These marks are all shown in green.
SPF,DKIM,DMARC,MX,DNSBL
Whereas, RDNS is shown in red.
You have changed the SMTP server to a subdomain
mail.mydomain.com
Mail is working normally.
But I need to set rDNS correctly.
On the Plesk control panel, I added an A record
mail.mydomain.com A IPv4
In the datacenter the default server name is server.mydomain.com
I tried changing that to mail.mydomain.com
Also in Cloud Flare was added
mail.mydomain.com A IPv4
Not working.
Any suggestions.

 

[Webodesk.com]

Hello,

Ask your Service provider to add RDNS record to your server. So, that might resolve your issue.

Thank you

 

[Bitpalast]

rDNS (reverse DNS, PTR record) is an enty that needs to be configured in the router of your data center. It cannot be configured by a DNS entry in your domain. Normally, data centers offer a control panel where you can enter your rDNS record.

 

[WordsBitcoins]

Hi Peter,

Thank you for your response.

I know that my server from Hetzner DC, And I set PTR to mail.mydomain.com

 

[Bitpalast]

The rDNS name needs to be the name of your host, not of your mail domain. For example if you have named your host in /etc/hosts "abrakadabra.de" then you need to enter "abrakadabra.de" as your rDNS name.

 

[WordsBitcoins]

Hi Peter,

Thank you for your prompt response.
Actually, the hostname is server.mydomain.com
And I have added A record in Cloud Flare and in Plesk.
Same look.
But in my case the mail server mail.mydomain.com
Do I need a separate IP address?
Or, could you write what rDNS should be in the three places
Data Center
Plesk
Cloudflare

This is exactly how I am.
DC: server.mydomain.com
Plesk: A IPv4 server.mydomain.com
CloudFlear: A IPv4 server.mydomain.com

Regards.

 

[weltonw]

I'm guessing you have the subdomain proxied, so it actually points to Cloudflare's IP? Click the orange cloud, and make sure its grey

 

[WordsBitcoins]

Hi John,

Thank you for your answer
If you mean for mail.mydomain.com
It's grey already.

Any suggestions?

 

[weltonw]

Can you provide us the domain? Have you checked what the rDNS resolves to?

 

[WordsBitcoins]

Hi John,
Unfortunately, this domain for a bank under construction.
It is difficult to publish unless the project is completed for security reasons.
Can you tell me what I should do for any tests?

 

[WordsBitcoins]

Reverse MX A records (PTR)

Your reverse (PTR) record: IPv4.in-addr.arpa -> server.mydomain.com You have reverse (PTR) records for all your IPs, that is a good thing.

 

[Uraniumhazee]

Reverse MX A records (PTR)

Your reverse (PTR) record: IPv4.in-addr.arpa -> server.mydomain.com You have reverse (PTR) records for all your IPs, that is a good thing.

I have same problem
Could you please help me?
I use cloudflare + plesk.
I have hetzner cloud too.
How can i add ptr record?

 

[WordsBitcoins]

I have same problem
Could you please help me?
I use cloudflare + plesk.
I have hetzner cloud too.
How can i add ptr record?

Hi,

Read this article:

Warning about exposing your origin IP address via DNS records

When you have grey-clouded DNS records, Cloudflare may warn you that your DNS records might reveal your origin server’s IP address. This is most common with A, AAAA, CNAME, and MX DNS records.Overv...

support.cloudflare.com

Regards.