C# 通过 Microsoft Exchange Server 发送电子邮件
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原文地址: http://stackoverflow.com/questions/19723801/
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Sending Email through Microsoft Exchange Server
提问by Zach Ross-Clyne
Okay, so I have this program which in essence acts as an email client for a company, it constructs the email for them and sends it out.
好的，所以我有这个程序，它本质上充当公司的电子邮件客户端，它为他们构建电子邮件并将其发送出去。
I've done everything on it, but when going to send the email, they get a Mailbox Unavailable. Accessed Denied - Invalid HELO Name
我已经做了所有的事情，但是当要发送电子邮件时，他们收到了 Mailbox Unavailable. Accessed Denied - Invalid HELO Name
Interestingly though, I use the same username for the network credentials and the from part.
有趣的是，我对网络凭据和 from 部分使用了相同的用户名。
EDIT:Update code to what I'm now using... Now getting Failure sending mailerror.
编辑：将代码更新为我现在正在使用的内容...现在Failure sending mail出现错误。
Here is my MailConst.csclass:
这是我的MailConst.cs课：
public class MailConst
{
/*
*/
public static string Username = "username";
public static string Password = "password";
public const string SmtpServer = "smtp.domain.co.uk";
public static string From = Username + "@domain.co.uk";
}
and here is the use of these variables in my main class:
这是我的主类中这些变量的使用：
public static void SendMail(string recipient, string subject, string body, string[] attachments)
{
SmtpClient smtpClient = new SmtpClient();
NetworkCredential basicCredential = new NetworkCredential(MailConst.Username, MailConst.Password, MailConst.SmtpServer);
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress(MailConst.From);
// setup up the host, increase the timeout to 5 minutes
smtpClient.Host = MailConst.SmtpServer;
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = basicCredential;
smtpClient.Timeout = (60 * 5 * 1000);
message.From = fromAddress;
message.Subject = subject + " - " + DateTime.Now.Date.ToString().Split(' ')[0];
message.IsBodyHtml = true;
message.Body = body.Replace("\r\n", "<br>");
message.To.Add(recipient);
if (attachments != null)
{
foreach (string attachment in attachments)
{
message.Attachments.Add(new Attachment(attachment));
}
}
smtpClient.Send(message);
}
Just as a side note. The program works when using my credentials, when going through my own server, just doesn't work when linking it to theirs.
只是作为一个旁注。该程序在使用我的凭据时工作，当通过我自己的服务器时，在将其链接到他们的服务器时不起作用。
采纳答案by Zach Ross-Clyne
In order to fix this problem I had to use the optional parameter Domainfor the NetworkCredential
为了解决这个问题，我不得不使用可选参数Domain为NetworkCredential
My code now looks like this:
我的代码现在看起来像这样：
NetworkCredential basicCredential = new NetworkCredential(MailConst.UserName, MailConst.Password, MailConst.Domain
NetworkCredential basicCredential = new NetworkCredential(MailConst.UserName, MailConst.Password, MailConst.Domain
Where the MailConst.Domainis a string pointing to the Exchange domain.
其中MailConst.Domain是指向 Exchange 域的字符串。
