when i send mail through outlook express its shows error in yellow triangle but no error message will be displayed bleow there, and the mail which i sent will be in outbox, but the message will be sent. every time when i press send/receive it shows the same error, but the message will be sent, so like that one message which i sent, it will go many times to them. if i delete that outbox message it won't give this error, but if i want to send mail to another the same process repeats. so how to slove this problem can anyone help me out.