This Microsoft fix will do the trick:
http://support.microsoft.com/default.aspx/kb/941090
"Messages may be stuck in the Outbox when you use Windows Mail on a
computer that is running Windows Vista"
That page offers two download options. Unless you know for sure
you have 64-bit Vista, use the 32-bit option.
--
Gary VanderMolen [MS-MVP WLM]
"zhang" <zhang@xxxxxx> wrote in message news:40B6AFF7-6503-4F41-BE40-80E1123D5480@xxxxxx
Quote:
> there is a mail in my send out box, and when I clikck, it is said unkonw
> mistake....
>
> because this mail in the send out box, I can not send out new mails.
>
> I need to delet or empty the send out box, tell me how to do...
>
> when I want to delete this mail, it is said unknow mistake, I can delete
> this mail!!