> For the complete documentation index, see [llms.txt](https://docs.synteq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.synteq.com/dedicated-servers/other/requesting-rdns.md).

# Requesting rDNS

{% hint style="danger" %}
Before requesting rDNS, make sure you have the appropriate `A` records set in your DNS zone that point to the IP address you want the rDNS record to resolve to.
{% endhint %}

## What is rDNS?

Reverse DNS (rDNS) records are PTR (pointer) records that map IP addresses back to domain names. Unlike standard DNS A records that point domains to IP addresses, PTR records work in reverse - they tell the internet what domain name should be associated with a specific IP address.

Email servers often require valid rDNS records to prevent messages from being marked as spam. Without proper rDNS configuration, your server may face delivery issues.

## How to request rDNS? 

### 1. Open a ticket

Start by going to our client area, and then on the left navigation bar, please select `Support` \[1] > `Open Ticket` \[2]

<figure><img src="/files/Oti6og5Qxzj8ydkiAPK7" alt=""><figcaption></figcaption></figure>

### 2. Fill out the body of the ticket

Then, select the `Technical Support` department

<figure><img src="/files/VCwvYpGE3eFHuTmNFI9G" alt=""><figcaption></figcaption></figure>

Afterward, please select the appropriate server in the `Realted Service` field, and fill out the `Subject`, and the `Message` part as per the table below:

<table data-header-hidden><thead><tr><th width="116.109375"></th><th></th></tr></thead><tbody><tr><td>Subject [1]</td><td><pre><code>rDNS request - dedicated server
</code></pre></td></tr><tr><td>Message [2]</td><td><pre><code>Hello, 

Please add in the following rDNS records to the following IPs:
xxx.xxx.xxx.xxx > mail.crunchbits.com

Thank you! </code></pre></td></tr></tbody></table>

<figure><img src="/files/WhNgJ9riSshystSphEsS" alt=""><figcaption></figcaption></figure>

### 3. Submit the ticket

Then, please click the `Submit` button at the bottom, and wait until one of our team members adds your PTR record to our DNS zone.&#x20;

<figure><img src="/files/jQdvlSyHFUC3a5ToGqK0" alt=""><figcaption></figcaption></figure>

After we get back to you with confirmation that we added your PTR record, please wait approximately 24-48 hours for it to be propagated.&#x20;


---

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