If you are worried about domain poaching, then usually the best place to start is your own domain registrar or another well-known reliable vendor, rather than responding to this unsolicited approach.
From: John <email@example.com>
Date: 22 April 2011 06:26
Subject: Urgent notice of Intellectual Property protection
This email is from China domain name registration center, which mainly deal with the domain name registration and dispute internationally in China and Asia.
On April 21st 2011. We received HAITONG company's application, they want to register " dynamoo" as its Internet keyword and CN/Asia domain names. It is china and Asia domain names. But after checking we find this domain name conflict with your company, in order to deal with this matter better, so we send you email, and want to confirm whether this company is your distributor or business partner in China?
I'm looking forward to hearing from you!
Oversea marketing manager
Office: +86(0)21 6191 8696
Mobile: +86 1366152 9704
Fax: +86(0)21 6191 8697