VB.net Suggestions for SMTP client connection error, trying to send message through exchange server

Question

So I'm trying to connect to our exchange server and send a message through vb.net using the smtpClient. Here is my code:

    Dim smtp As New SmtpClient("exchangeserver.com")
    Dim mail As New MailMessage
    mail.From = New MailAddress("me@me.com")
    mail.To.Add("me@me.com")
    mail.Subject = "Test Email"
    mail.Body = "Testing body."
    Try
        smtp.Send(mail)
    Catch exc As Exception
        Console.WriteLine(exc.ToString)
    End Try

The exception I'm getting indicates that:

 System.Net.Mail.SmtpException: Failure Sending mail. --->
 System.Net.WebException: Unable to connect to the remote server --->
 System.Net.Sockets.SocketException: An attempt was made to access a socket in a way forbidden by its access permissions ##.##.#.##:25

Seems like I can't connect on that port? No permissions... should I try something else or revert back to sending emails through outlook?

Answer 1

one thing to check... you may need to set credentials... look into this

smtp.Credentials = New Net.NetworkCredential( "blah blah blah", "yada yada")