c# – 使用ASP.NET MVC发送新闻稿时出现IIS错误

概述我在mvc-helper类中发送简报(大约5000人)时遇到了问题. public static void SendNewsletter(string fromAccount, string subject, string eMailText){ var userEMailAddresses = new List<string>(); using (var dbContext 我在mvc-helper类中发送简报(大约5000人)时遇到了问题.

public static voID SendNewsletter(string fromAccount,string subject,string eMailText){    var userEMailAddresses = new List<string>();    using (var dbContext = new dbEntitIEs())    {        userEMailAddresses =            dbContext                .User                    .Where(w =>                        !w.IsDeactivated &&                        !w.IsBlackListed)                    .Select(s =>                        s.Username)                    .ToList();    }    new Thread(() =>    {        for (int i = 0; i < userEMailAddresses.Count; i++)        {            SendMail(fromAccount,userEMailAddresses[i],subject,eMailText);        }    }).Start();}

这是我的功能,将在控制器中调用.下一个代码块是发送功能.

public static voID SendMail(string fromAccount,string toAccount,string eMailText){    var fromEmailAddress = new EMailModel(fromAccount);    var body = string.Empty;    using (var sr = new StreamReader(HostingEnvironment.MapPath("\App_Data\Templates\") + "EMailTemplate.txt"))    {        body = sr.ReadToEnd();    }    body = body.Replace("%%subject%%",subject);    body = body.Replace("%%Body%%",eMailText);    body = body.Replace("%%Year%%",DateTime.Now.Year.ToString());    using (MailMessage mail = new MailMessage(fromEmailAddress.EMailAddress,toAccount))    {        mail.Subject = subject;        mail.Body = WebUtility.HTMLDecode(body);        mail.IsBodyHTML = true;        using (SmtpClIEnt smtp = new SmtpClIEnt(Statics.SmtpClIEnt,Statics.SmtpPort))        {            smtp.UseDefaultCredentials = false;            smtp.Credentials = new System.Net.NetworkCredential(fromEmailAddress.EMailAddress,fromEmailAddress.Password);            smtp.EnableSsl = Statics.SslEnabled;            try            {                smtp.Send(mail);                Thread.CurrentThread.Join(1000);            }            catch (Exception ex) {                throw ex;            }        }    }}

大约1300封电子邮件后,我的IIS收到以下错误：

我怎么解决这个问题？我需要通讯系统……

解决方法 我发现了很多错误,为什么它不起作用.

第一个是mailenable中的安全设置.在mailenableadmin上 – >服务器 – > Localhost – >服务器和连接器 – >右键单击SMTP和设置 – > Security-Tab上有一个关于收据限制的复选标记(1000).我已取消选中它并重新启动服务器.

在此之后,我的用户列表中存在无效的电子邮件地址.然后我创建了一个电子邮件检查功能：

private static bool IsValIDEMail(string eMailAddress)    {        if (Regex.IsMatch(eMailAddress,@"\A(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?)\Z",RegexOptions.IgnoreCase) && new EmailAddressAttribute().IsValID(eMailAddress))            return true;        return false;    }

我已将我的发送功能更新为

public static voID SendMail(string fromAccount,string eMailText)    {        if (!IsValIDEMail(toAccount))        {            var invalIDEMailAddress = toAccount;            toAccount = "administrator@YOUR-DOMAIN.com";            subject = "E-Mail-Address is invalID";            eMailText = String.Format("Dear administrator,<br><br>the following E-Mail-Address is invalID:<br><br>{0}",invalIDEMailAddress);        }        var fromEmailAddress = new EMailModel(fromAccount);        var body = string.Empty;        using (var sr = new StreamReader(HostingEnvironment.MapPath("\App_Data\Templates\") + "EMailTemplate.txt"))        {            body = sr.ReadToEnd();        }        body = body.Replace("%%subject%%",subject);        body = body.Replace("%%Body%%",eMailText);        body = body.Replace("%%Year%%",DateTime.Now.Year.ToString());        using (MailMessage mail = new MailMessage(fromEmailAddress.EMailAddress,toAccount))        {            mail.Subject = subject;            mail.Body = WebUtility.HTMLDecode(body);            mail.IsBodyHTML = true;            using (SmtpClIEnt smtp = new SmtpClIEnt(Statics.SmtpClIEnt,Statics.SmtpPort))            {                smtp.UseDefaultCredentials = false;                smtp.Credentials = new System.Net.NetworkCredential(fromEmailAddress.EMailAddress,fromEmailAddress.Password);                smtp.EnableSsl = Statics.SslEnabled;                try                {                    smtp.Send(mail);                    Thread.CurrentThread.Join(1000);                }                catch (Exception) { }            }        }    }

和SendNewsletter-Function是一样的.现在,所有的电子邮件都会消失.

非常感谢所有帮助过的用户！

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