I have receive a very similar email on 23th September, with the same company name interested in registration the trademark. Here follows the email:
"Dear CEO,
We are the domain name registration organization in Asia, which mainly deal with international company's in Asia. We have something important need to confirm with your company.

On the September 23th 2008, we received an application formally. One company named "Xiayang Holdings Limited Company" wanted to register following
Internet Trademark:Siriuselectric

Domain names:

siriuselectric.asia
siriuselectric.biz
siriuselectric.com.cn
siriuselectric.com.tw
siriuselectric.hk
siriuselectric.in

through our body.

During our auditing procedure we find out that the alleged "Xiayang Holdings Limited Company" has no trade mark, Intellectual property, nor patent even similar to that word. we found that the keywords and domain names applied for registration are as same as your company's name and trademark. one point need you to confirm: whether this alleged "Xiayang Holdings Limited Company" is your business partner or distributor in ASIA. if so, we will complete their registration. These days we are dealing with it.

If you are not in charge of this please transfer this email to appropriate dept. in order to deal with this issue better, please let someone who is responsible for trademark or domain name contact me as soon as possible.

Best Regards,

kevin

Check Domain Name dept.

SK Holdings Company ltd
---------------------------------------------------------
T: +852-9566 0253 +852-8122 6293
+852-3075 9838 +852-3059 3099
F: +852-8125 7328 +852-3187 5699
+852-3019 8068 +852-9566 0302
Website: www.sk-holdings.net