錯誤發送電子郵件vb.net

Question

連接嘗試失敗，因爲連接的方沒有正確一段時間後響應或已建立的連接失敗，因爲連接的主機未能響應67.69.240.69:25

Dim smtpClient As New SmtpClient() 
    Dim message As New MailMessage() 
    Dim fromAddress As New MailAddress("news@ffff.ca") 
    smtpClient.Host = "smtp10.bellnet.ca" 
    smtpClient.Credentials = New NetworkCredential("news", "1235!") 

    smtpClient.Port = "25" 
    message.From = fromAddress 
    message.To.Add("khs@ddddd.com") 
    message.Subject = "eyjeyjey afsdf" 

    message.Body = "Hello from aaaaa" 
    message.IsBodyHtml = True 
    smtpClient.EnableSsl = True 
    smtpClient.Send(message) 

Answer 1

Bell Canada阻止默認的SMTP端口25.

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