451 qq trouble creating files in queue (#4.3.0)

[[EMAIL PROTECTED]]

Hi:
now when I telnet 127.0.0.1 25
and process the smtp coversation,all r ok except when at last I type .
to end the data ,the systeme
says "451 qq trouble creating files in queue (#4.3.0)"
and advice will be very appreciated
thanks

Akai

--
Song Kaicheng
http://www.1stChina.com/
ICQ:16229085