Email Attachment Pbm

i have pbm, all the values from first form is passed to the asp form including the path of the file attachment, through local host it is well running if i upload files in remote server and process then error is generated could anybody help this out Code:
...
stratt = Request.QueryString("f_path")

With objCDOMail
Set .Configuration = objConfig
.From = strFromEmailAddress
.To = strToEmailAddress
'.Cc = strCcEmailAddress
'.Bcc = strBccEmailAddress
.Subject = "Enquiry sent from enquiry form on website"
'.HTMLBody = strHTML
.TextBody = strBody
.AddAttachment stratt (path)
.Send
End With