This guide explains how to change the reverse DNS (PTR) records for your service through the Internetport client portal. Properly configured reverse DNS can improve the deliverability of your emails, enhance security by verifying IP addresses, and provide better logging and debugging capabilities.

What is Reverse DNS?

Reverse DNS (rDNS), also known as a PTR record, maps an IP address back to a domain name. It's commonly used for email servers and other services that require proper DNS configuration. When an email server receives an email from another server, it often performs a reverse DNS lookup to verify the authenticity of the sender's IP address.

How to Change Reverse DNS

  1. Step 1: Log in to your client account

    To start, open a web browser and navigate to the Internetport client portal at https://portal.internetport.com. Enter your username and password to log in. If you have forgotten your credentials, click on "Forgot your password?" to reset it.

  2. Step 2: Navigate to your service

    Once logged in, locate the list of services associated with your account. This is typically found under a section labeled "My Services" or something similar. Click on the specific service for which you want to modify the reverse DNS records. It might be listed as an IP address, domain name, or service ID.

  3. Step 3: Open the DNSREVERSE tab

    In the service details page, look for a tab labeled DNSREVERSE. Clicking on this tab will take you to the reverse DNS configuration interface. If you do not see this tab, it might be named differently such as "Reverse DNS" or "PTR Records." Ensure that you are in the correct section before proceeding.

  4. Step 4: Change DNS records

    In the reverse DNS configuration interface, you will see a list of existing PTR records associated with your IP address. To add or modify a record, click on the "Add" button if available. You may need to fill in fields such as the IP address and the corresponding domain name (FQDN). Make sure the FQDN is correctly formatted and points back to your domain.

    After entering the necessary information, review it for accuracy. Typos or incorrect entries can lead to failed lookups. Once you are satisfied with the changes, click on "Save" or "Submit" to apply the new PTR record.

Tips for Successful Reverse DNS Configuration

  • Use a FQDN: Ensure that the domain name you use is a fully qualified domain name (FQDN), meaning it includes all subdomains and the top-level domain.
  • Verify Ownership: Make sure that the domain name you are using for reverse DNS points back to an IP address under your control. This helps prevent abuse and ensures proper verification.
  • Contact Support: If you encounter any issues or have questions during the process, do not hesitate to contact Internetport support for assistance. They can provide guidance and help resolve any problems.

By following these steps and tips, you should be able to successfully change your reverse DNS records through the Internetport client portal. Proper configuration of reverse DNS is an essential part of maintaining a reliable and secure online presence.