Can anyone help me in authenicating to an exchange server that is on another domain and that does not allow relays to it. I am unable to get the smtp property to work correctly. I can get it to work if I am on the same domain but as soon a I put the code into another domain (our DMZ), I get "Could not access&#039;CDO.MEssage&#039;object. Can any one help? Thanks!<BR><BR>here is a snippet:<BR><BR> Try<BR> Dim message As New System.Web.Mail.MailMessage()<BR> message.To = ""<BR> message.From = ""<BR> message.Subject = "testing exchange relay from"<BR> message.Priority = System.Web.Mail.MailPriority.High<BR> message.BodyFormat = System.Web.Mail.MailFormat.Html<BR> Dim messagebody As String<BR> message.Body = "Testing the email"<BR> System.Web.Mail.SmtpMail.SmtpServer = "my.smtp.mail"<BR> System.Web.Mail.SmtpMail.Send(message)<BR> Catch err As Exception<BR> Label1.Text = err.Message<BR> End Try