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Can I use reverse DNS with RightScale?

Background Information

What happens with reverse DNS lookups and Amazon EC2?



Normally, if you perform a Reverse DNS Lookup on an EC2 instance with an Elastic IP, it will resolve to an AWS generated domain name.

For example: resolves to ""
Top Level Domain: ""
Country IP Address: UNITED STATES

So even though you have your DNS Made Easy settings set to to point to the EIP, when you do an nslookup, it returns the Amazon domain instead of

In April 2010, Amazon introduced support for configuring reverse DNS (RDNS) records for your Elastic IPs, which will allow you to assign a static reverse DNS record to an Elastic IP.

To apply for RDNS, you must complete Amazon's Request to Remove Email Sending Limitations form.

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Posted 11:28, 24 Oct 2013
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