Perry E. Metzger wrote:
> Deng:
> 
> Your return address on your email does not work. This makes it very
> hard to contact you. Please either fix it or tell us your correct
> address so that we can send you mail.
> 
> Perry

I checked the return address, and found I made a wrong spelling on
my home machine:

    dhongwei@sz.cei.gov.cn   ---- is good
    dhongwei@sz.cei.go.cn    ---- is bad. 

Thanks.

Deng