.net邮件发送在本地测试都可以正常发邮件,,一发布的服务器上后就出现发送失败(测试的邮箱和我到本地的测试通过的邮箱一样);分别用过126,163,sina,qq邮箱,在本地测试通过,发布到网上后无法发送成功,捕到异常:
System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 123.125.50.133:25
这里的红色ip是邮箱服务器的地址,后面的25为端口号;
看我代码
/// <summary> /// 发送邮件 /// </summary> /// <param name="fromEmail">发件人</param> /// <param name="fromPsaaWord">发件人密码</param> /// <param name="toEmail">收件人</param> /// <param name="subject">主题</param> /// <param name="body">内容</param> /// <param name="attachmentsPath">附件(如果没有写为null)</param> /// <returns></returns> public bool SendReady(string fromEmail, string fromPsaaWord, string toEmail, string subject, string body, string[] attachmentsPath) { bool Success = true; //验证合法邮箱的表达式,正确时返回true if (!Regex.IsMatch(fromEmail, @"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$")) { //邮箱不合法 //MessageBox("邮箱不合法"); Success = false; } if (!Regex.IsMatch(toEmail, @"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$")) { Success = false; } if (subject.Trim() == "") { // MessageBox("请填写主题"); Success = false; } if (body.Trim() == "") { // MessageBox("请填写内容"); Success = false; } else { MailAddress from = new MailAddress(fromEmail); //收件人地址 MailAddress to = new MailAddress(toEmail); //邮件主题、内容 MailMessage message = new MailMessage(from, to); //主题 message.Subject = subject; message.SubjectEncoding = System.Text.Encoding.UTF8; //内容 message.Body = body; message.BodyEncoding = System.Text.Encoding.UTF8; //在有附件的情况下添加附件 try { if (attachmentsPath != null && attachmentsPath.Length > 0) { Attachment attachFile = null; foreach (string path in attachmentsPath) { attachFile = new Attachment(path); message.Attachments.Add(attachFile); } } } catch (Exception err) { // MessageBox("在添加附件时有错误"); Success = false; //throw new Exception("在添加附件时有错误:" + err); } try { //大部分邮件服务器均加smtp.前缀 SmtpClient client = new SmtpClient("smtp." + from.Host); //不使用默认凭证,注意此句必须放在client.Credentials的上面 client.UseDefaultCredentials = false; //指定用户名、密码 client.Credentials = new NetworkCredential(from.Address, fromPsaaWord); //邮件通过网络发送到服务器 client.DeliveryMethod = SmtpDeliveryMethod.Network; try { client.Send(message); } catch (Exception e) { Success = false; throw new Exception("系统繁忙,发送失败!"); } finally { //及时释放占用的资源 message.Dispose(); } } catch (SmtpException err) { Success = false; ////如果错误原因是没有找到服务器,则尝试不加smtp.前缀的服务器 //if (err.StatusCode == SmtpStatusCode.GeneralFailure) //{ // try // { // //有些邮件服务器不加smtp.前缀 // SmtpClient client = new SmtpClient(from.Host); // SendMail(client, from, fromPsaaWord, to, message)//发送; // } // catch (SmtpException) // { } //} //else //{ } } } return Success; }
到网上用过不同的代码,包括.net 1.1的代码!都是出现上面我说的情况,在本地测试成功,发到服务器上失败!我防火墙关了,没有安杀毒软件。。
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