C# 使用ASP.NET MVC发送时事通讯时出现IIS错误
在我的mvc助手类中,我在发送时事通讯(给大约5000人)时遇到问题C# 使用ASP.NET MVC发送时事通讯时出现IIS错误,c#,asp.net,asp.net-mvc,iis,C#,Asp.net,Asp.net Mvc,Iis,在我的mvc助手类中,我在发送时事通讯(给大约5000人)时遇到问题 public static void SendNewsletter(string fromAccount, string subject, string eMailText) { var userEMailAddresses = new List<string>(); using (var dbContext = new dbEntities()) { userEMailA
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();
}
在收到大约1300封电子邮件后,我的IIS出现以下错误:
我怎样才能解决这个问题?我需要时事通讯系统…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->Servers->Localhost->Servers and Connectors->右键单击SMTP和设置->安全选项卡上,在收件人限制(1000)上有一个复选标记。我已取消选中并重新启动了服务器 在此之后,我的用户列表中有一个未验证的电子邮件地址。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;
}
我已将发送功能更新为
public static void SendMail(string fromAccount, string toAccount, string subject, 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) { }
}
}
}
publicstaticvoidsendmail(stringfromcount、stringtoaccount、stringsubject、stringemailtext)
{
如果(!IsValidEMail(待核算))
{
var invalidEMailAddress=toAccount;
toAccount=”administrator@YOUR-域名(DOMAIN.com),;
subject=“电子邮件地址无效”;
eMailText=String.Format(“尊敬的管理员,
以下电子邮件地址无效:
{0}”,invalidEMailAddress);
}
var fromEmailAddress=新的EMailModel(fromAccount);
var body=string.Empty;
使用(var sr=new StreamReader(HostingEnvironment.MapPath(“\\App\u Data\\Templates\\”)+“EMailTemplate.txt”))
{
body=sr.ReadToEnd();
}
正文=正文。替换(“%%Subject%%”,Subject);
body=body.Replace(“%%body%%”,eMailText);
body=body.Replace(“%%Year%%”,DateTime.Now.Year.ToString());
使用(MailMessage mail=new MailMessage(fromEmailAddress.EMailAddress,toAccount))
{
mail.Subject=主题;
mail.Body=WebUtility.HtmlDecode(Body);
mail.IsBodyHtml=true;
使用(SmtpClient smtp=新SmtpClient(Statics.SmtpClient,Statics.SmtpPort))
{
smtp.UseDefaultCredentials=false;
smtp.Credentials=新系统.Net.NetworkCredential(fromEmailAddress.EMailAddress,fromEmailAddress.Password);
smtp.EnableSsl=Statics.SslEnabled;
尝试
{
smtp.发送(邮件);
Thread.CurrentThread.Join(1000);
}
捕获(异常){}
}
}
}
而SendNewsletter的功能是相同的。现在,所有的电子邮件都出去了
非常感谢所有提供帮助的用户
Thread.CurrentThread.Join(1000)代码>???我们有一个邮件系统,它在处理了太多的电子邮件后就崩溃了。我们的邮件服务器似乎被阻塞了,所以我们设置了一个循环计数器和一个挂起时间,即处理10封邮件,等待10秒,冲洗并重复。它现在运行良好,也许值得在您的案例中进行调查?就我个人而言,我会尝试使用经过尝试和测试的异步发送和结束,而不是重新发明轮子。。。例如EASendMail。。。正如雨果所说。。确保电子邮件服务器上没有垃圾邮件过滤器,例如,1分钟内发送100多封电子邮件=垃圾邮件=阻止。。。路线上有病毒检查吗?因为它们也可以有垃圾邮件过滤器。@FalcoAlexander Thread.CurrentThread.Join(1000)与Thread.Sleep(1000)相同。
public static void SendMail(string fromAccount, string toAccount, string subject, 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) { }
}
}
}