ASP.net Error trying to send email

Hi. I am getting the following error trying to send an email from my ASP.net site
using the code further down. The strange thing is that it works fine when I am
debugging then doesn't once I have deployed the website


rectory or file specified does not exist on the Web server.
The URL contains a typographical error.
A custom filter or module, such as URLScan, restricts access to the file.
 
Things you can try:
Create the content on the Web server.
Review the browser URL.
Create a tracing rule to track failed requests for this HTTP status code and see which module is calling SetStatus. For more information about creating a tracing rule for failed requests, click here.
 
Links and More InformationThis error means that the file or directory does not exist on the server. Create the file or directory and try the request again.

    Public Sub oSendMailMessage(ByVal from As String, ByVal recepient As String, ByVal bcc As String, ByVal cc As String, ByVal subject As String, ByVal body As String)
        ' Instantiate a new instance of MailMessage
        Dim mMailMessage As New MailMessage()

        ' Set the sender address of the mail message
        mMailMessage.From = New MailAddress(from)
        ' Set the recepient address of the mail message
        mMailMessage.To.Add(New MailAddress(recepient))

        ' Check if the bcc value is nothing or an empty string
        If Not bcc Is Nothing And bcc <> String.Empty Then
            ' Set the Bcc address of the mail message
            mMailMessage.Bcc.Add(New MailAddress(bcc))
        End If

        ' Check if the cc value is nothing or an empty value
        If Not cc Is Nothing And cc <> String.Empty Then
            ' Set the CC address of the mail message
            mMailMessage.CC.Add(New MailAddress(cc))
        End If

        ' Set the subject of the mail message
        mMailMessage.Subject = subject
        ' Set the body of the mail message
        mMailMessage.Body = body

        ' Set the format of the mail message body as HTML
        mMailMessage.IsBodyHtml = True
        ' Set the priority of the mail message to normal
        mMailMessage.Priority = MailPriority.Normal

        ' Instantiate a new instance of SmtpClient
        Dim mSmtpClient As New SmtpClient()
        ' Send the mail message
        mSmtpClient.Send(mMailMessage)
    End Sub