什么是SMTP.MAIL的原因:操作超时? [英] what is the cause of SMTP.MAIL: the Operation has timed out?
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问题描述
我创建一个内联网的基于Web的应用程序,它会发送通知,具体取决于管理员的选择,它的用户。
I am creating an intranet web-based application that will send notifications to its users depending on the Admin's choice.
我正确地开发的邮件页面,它做工精细用15或20个用户。现在,我有超过200个用户,所以当我运行这个页面,我得到了下面的错误,我不知道为什么:
异常详细信息:System.Net.Mail.SmtpException:操作已
超时。
Exception Details: System.Net.Mail.SmtpException: The operation has timed out.
我的code-背后(C#):
My Code-Behind (C#):
protected void Page_Load(object sender, EventArgs e)
{
SendEmailTOAllUser();
}
protected void SendEmail(string toAddresses, string fromAddress, string MailSubject, string MessageBody, bool isBodyHtml)
{
SmtpClient sc = new SmtpClient("MAIL.companyDomainName.com");
try
{
MailMessage msg = new MailMessage();
msg.From = new MailAddress("pssp@companyDomainName.com", "PMOD Safety Services Portal (PSSP)");
// In case the mail system doesn't like no to recipients. This could be removed
//msg.To.Add("pssp@companyDomainName.com");
msg.Bcc.Add(toAddresses);
msg.Subject = MailSubject;
msg.Body = MessageBody;
msg.IsBodyHtml = isBodyHtml;
//Response.Write(msg);
sc.Send(msg);
}
catch (Exception ex)
{
throw ex;
}
}
protected void SendEmailTOAllUser()
{
string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspEmail;Integrated Security=True";
using (SqlConnection conn = new SqlConnection(connString))
{
var sbEmailAddresses = new System.Text.StringBuilder(1000);
string quizid = "";
// Open DB connection.
conn.Open();
string cmdText = "SELECT MIN (QuizID) As mQuizID FROM dbo.QUIZ WHERE IsSent <> 1";
using (SqlCommand cmd = new SqlCommand(cmdText, conn))
{
SqlDataReader reader = cmd.ExecuteReader();
if (reader != null)
{
while (reader.Read())
{
// There is only 1 column, so just retrieve it using the ordinal position
quizid = reader["mQuizID"].ToString();
}
}
reader.Close();
}
string cmdText2 = "SELECT Username FROM dbo.employee";
using (SqlCommand cmd = new SqlCommand(cmdText2, conn))
{
SqlDataReader reader = cmd.ExecuteReader();
if (reader != null)
{
while (reader.Read())
{
var sName = reader.GetString(0);
if (!string.IsNullOrEmpty(sName))
{
if (sbEmailAddresses.Length != 0)
{
sbEmailAddresses.Append(",");
}
// Just use the ordinal position for the user name since there is only 1 column
sbEmailAddresses.Append(sName).Append("@companyDomainName.com");
}
}
}
reader.Close();
}
string cmdText3 = "UPDATE dbo.Quiz SET IsSent = 1 WHERE QuizId = @QuizID";
using (SqlCommand cmd = new SqlCommand(cmdText3, conn))
{
// Add the parameter to the command
var oParameter = cmd.Parameters.Add("@QuizID", SqlDbType.Int);
// Get a local copy of the email addresses
var sEMailAddresses = sbEmailAddresses.ToString();
string link = "<a href='http://pmv/pssp/StartQuiz.aspx?testid=" + quizid + "'> Click here to participate </a>";
string body = @"Good day, <br /><br />
<b> Please participate in the new short safety quiz </b>"
+ link +
@"<br /><br />
Also, give yourself a chance to gain more safety culture by reading the PMOD Newsletter.
<br /> <br /><br /> <br />
This email was generated using the <a href='http://pmv/pssp/Default.aspx'>PMOD Safety Services Portal (PSSP) </a>.
Please do not reply to this email.
";
SendEmail(sEMailAddresses, "", "Notification of New Weekly Safety Quiz", body, true);
// Update the parameter for the current quiz
oParameter.Value = quizid;
// And execute the command
cmd.ExecuteNonQuery();
}
conn.Close();
}
}
任何帮助吗?
推荐答案
添加 sc.timeout = 600000(10分钟)
在发送电子邮件的方法。
add sc.timeout=600000(10min) in send email method.
如果邮件发送需要更多的时间来完成它可以让你
if email send requires more time to complete the it allows you
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