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Request for Assistance with PTR Record Configuration – IP 68.154.49.111

Carlos Arias 5 Reputation points
2025-07-24T20:04:33.9366667+00:00

Dear Microsoft Azure Support Team,

I am writing to request assistance regarding the proper configuration of a PTR (reverse DNS) record for our public IP address 68.154.49.111. I am the system administrator of the server web.chcyber.com, which hosts multiple domains using WHM/cPanel, including pagaza.com.gt.

Currently, we are using SendGrid as a smarthost for outbound email, due to Azure’s default restriction on port 25. Email delivery is functioning as expected through SendGrid.

However, we require a valid PTR record for IP 68.154.49.111 to align with best practices for email delivery, ensure consistency between the hostname and reverse DNS, and avoid being flagged as spam by some receiving mail servers.

Additional context:

  • Hostname: web.chcyber.com
  • A record for mail.pagaza.com.gt points to IP 68.154.49.111
  • Full access to WHM and cPanel is available
  • We have an active Azure support plan and would appreciate direct contact to resolve this issue efficiently

Please let us know how to proceed with the PTR record configuration for the above IP, or if this can be managed directly through the Azure portal.

Thank you for your assistance.

Sincerely,

Carlos Alejandro Arias López

System Administrator

******@chcyber.com

Azure DNS
Azure DNS
An Azure service that enables hosting Domain Name System (DNS) domains in Azure.

1 answer

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  1. G Sree Vidya 4,080 Reputation points Microsoft External Staff Moderator
    2025-07-25T00:23:27.82+00:00

    Hello Carlos Arias

    We understood that you are looking to set up a PTR (reverse DNS) record for your IP address 68.154.49.111 to improve your email deliverability and avoid spam filters.

    Services in Azure use IP addresses assigned by Azure and owned by Microsoft. These reverse DNS records (PTR records) must be created in the corresponding Microsoft-owned reverse DNS lookup zones.

    • The PTR record must match a forward DNS (A or CNAME) record that resolves to the same IP.
    • For example, if you want the PTR for 68.154.49.111 to resolve to web.chcyber.com, then web.chcyber.com must already resolve to 68.154.49.111.
    • Use the Set-AzPublicIpAddress PowerShell cmdlet with the -ReverseFqdn parameter.
    $pip = Get-AzPublicIpAddress -Name "YourPublicIPResourceName" -ResourceGroupName "YourResourceGroup"$pip.DnsSettings.ReverseFqdn = "web.chcyber.com"Set-AzPublicIpAddress -PublicIpAddress $pip
    • Ensure that web.chcyber.com has an A record pointing to 68.154.49.111.
    • You must have Owner or Contributor access to the Azure subscription.
    • Confirm that web.chcyber.com resolves to 68.154.49.111.

    Refer: https://learn.microsoft.com/en-us/azure/dns/dns-reverse-dns-for-azure-services

    Since you have an active Azure support plan, you can also open a support ticket for assistance with PTR configuration if needed.

    I hope this helps! If these answers your query, do click the "Upvote" and click "Accept the answer" of which might be beneficial to other community members reading this thread.

    If the above is unclear or you are unsure about something, please add a comment below.

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