如果提供用于基本身份驗證的憑據,則憑據将以明文形式發送到伺服器。這可能會産生安全問題,因為憑據可以被他人看見進而加以利用。但是向163的郵箱發送郵件是必須要帶上發送者的憑據資訊,否則郵件是發送不出去的。
SmtpClient也可以這樣建立:SmtpClient client=new SmtpClient(smtp_server),因為郵件發送伺服器的預設端口是25。
1、QQ郵箱向163郵箱發送郵件
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
Code
private static void TimeEvent(object source, ElapsedEventArgs e)
{
string smtp_server="smtp.qq.com";
int port = 25;
string mail_from = "***from_mail_username***@qq.com";
string sender = "***from_mail_username***";
string mail_to = "***to_mail_username***@163.com";
string receiver = "***to_mail_username***@";
string subject = "Title Test"
string body = "Content Test";
try
{
SendEmail(smtp_server, port, mail_from, sender, mail_to, receiver, subject, body);
}
catch(Exception ex)
MessageBox.Show(ex.Message);
}
public static void SendEmail(string smtp_server, int port, string mail_from, string sender, string mail_to, string receiver, string subject, string body)
MailAddress from = new MailAddress(mail_from, sender);
MailAddress to = new MailAddress(mail_to, receiver);
MailMessage message = new MailMessage(from, to);
message.BodyEncoding = Encoding.UTF8;
message.IsBodyHtml = true;
message.Subject = subject;
message.Body = body;
SmtpClient client = new SmtpClient(smtp_server, port);
client.Credentials = new NetworkCredential("***from_mail_username***@qq.com", "***pwd***");
client.Send(message);
2、163郵箱向163郵箱發送郵件
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
string smtp_server="smtp.163.com";
string mail_from = "***from_mail_username***@163.com";
string receiver = "***to_mail_username***";
SmtpClient client = new SmtpClient(smtp_server);
client.Credentials = new NetworkCredential("***from_mail_username***@163.com", "***pwd***");
3、163郵箱向QQ郵箱發送郵件
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
string mail_to = "***to_mail_username***@qq.com";
3、QQ郵箱向QQ郵箱發送郵件
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
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