ERROR WHILE CREATING THE SALES ORDER

Hi,

When creating the sales order i am entering "mode of transport"in TSW details and while trying to save it im getting a message saying "Express document "update was terminated"" recieved from the author "Rahul". If i dont enter the TSW detail while creating i am able to save the order and later in change mode i can enter the mode of transport.

When i check the inbox, it says "definately cannot transfer message to node SMTP due to connection error".

This is hapenning for only one user.

What could be the problem?

Regards,

Rahul.