C# 发送smtp，exchange邮件
1.exchange邮件
微软的Exchange邮件服务不同与一般的邮件server，他不能简单使用SmtpClient等组件实现邮件收发的功能。
那么怎么通过Exchange服务发送邮件呢?
微软的Exchange服务都有webservice接口, 通过其提供的webservice发送邮件也是最简单的方法。
验证Exchange服务的webservice是否正常：https://xx.xxxxx.com/ews/exchange.asmx， 能打开就是正常。可能须要登录。
可是这个webservice不同于普通的webservice，不能简单的加入web引用来调用。
首先我们须要下载一个Microsoft.Exchange.WebServices.dll，然后引用到我们的项目里边，是个msi，安装好之后就有那个dll，然后就能够開始了。。
以下是一个发送邮件的样例：
using Microsoft.Exchange.WebServices;
using Microsoft.Exchange.WebServices.Data;
private void SendEmail()
{
ExchangeService service = new ExchangeService();
// 获取身份验证, 能够尝试你的邮箱名, 域用户ID等
// user: 登录username，邮箱登录ID或者域登录ID
// password：你懂的
// domain：域，不是域名，域用户的的话就得填这个，选填
service.Credentials = new NetworkCredential("user", "password", "domain");
service.TraceEnabled = true;
service.AutodiscoverUrl("zhangsan@yuming.com"); // 这个是发件然的邮箱地址，完整的(xx@dd.com).
EmailMessage message = new EmailMessage(service);
message.Subject = "Email的主题";
message.Body = "Email的内容";
message.ToRecipients.Add("收件人的邮件地址");
message.Save();
message.SendAndSaveCopy();// 发送
}
2.smtp 邮件
2.1 outlook
for (int j = 0; j < 10; j++)
{
try
{
SmtpClient smtp3 = new SmtpClient();
smtp3.UseDefaultCredentials = false;
smtp3.Credentials = new System.Net.NetworkCredential("用户名@outlook.com", "密码"); //设置用于验证发件人身份的凭证
smtp3.Host = "smtp.office365.com";
smtp3.TargetName = "邮件程序" + j;
smtp3.Port = 587;
smtp3.EnableSsl = true;
var eml = new MailMessage();
eml.Sender = new MailAddress("用户名@outlook.com");
eml.From = eml.Sender;
eml.To.Add("收件人@qq.com");
eml.Headers.Add("X-Mailer", "Microsoft Outlook Express 6.00.2900.2869");//防止垃圾邮箱
string as_MailContent11 ="呵呵呵";
string body11 = "<html><body style=\"margin: 0px,0px,0px,0px; text-indent: 30px; height: 1700px; width:1200px;\"> <div style='width:700px;text-align:center'><img src='cid:bImg' border=\"0\"/></div> <div style=\"text-indent: 30px;height: 1700px; margin:0px auto; width=1200px; padding-left: 0px; padding-top: 0px; \">" + as_MailContent11 + "</div></body></html>";
eml.Subject = "K11 outlook 邮件异步测试(带附件)" + j;
eml.Body = body11;
eml.BodyEncoding = Encoding.UTF8;
eml.IsBodyHtml = true;
//smtp2.DeliveryMethod = SmtpDeliveryMethod.Network;//指定邮件发送方式
eml.Priority = MailPriority.Normal;//邮件优先级(High,Low,Normal)
var attachment11 = new Attachment("图片附件路径");
attachment11.ContentId = "bImg";//cid
eml.Attachments.Add(attachment11);
//var attachment211 = new Attachment(Attachments2);
//eml.Attachments.Add(attachment211);
try
{
smtp3.SendCompleted += new SendCompletedEventHandler(smtpClient_SendCompleted);
smtp3.SendAsync(eml, "true");
Log.AppendLog("20200813异步测试邮件-------发送成功");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
//smtp3.Dispose();
}
catch (Exception ex)
{
errorCount++;
Log.AppendLog("20200813异步测试邮件-------发送失败" + ex.Message);
}
}
void smtpClient_SendCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
{
try
{
SmtpClient callBack = (SmtpClient)sender;
Log.AppendLog("TargetName："+callBack.TargetName);
if (e.UserState.ToString() == "true")
{
Log.AppendLog("邮件异步回调：发送成功" + sender.ToString());
Log.AppendLog("邮件异步回调：发送成功" + e.Error);
}
else
{
Log.AppendLog("邮件异步回调：发送失败" + sender.ToString());
Log.AppendLog("邮件异步回调：发送失败" + e.Error);
}
}
catch (Exception ex)
{
Log.AppendLog(ex.Message);
}
}
2.2 163
#region 签名的方式
string MailContent = "<html><body style=\"margin: 0px,0px,0px,0px; text-indent: 30px; height: 1700px; width:1200px;\"> <div style='width:700px;text-align:center'><img src='cid:bImg' border=\"0\"/></div> <div style=\"text-indent: 30px;height: 1700px; margin:0px auto; width=1200px; padding-left: 0px; padding-top: 0px; \">" + "哈哈哈" + "</div></body></html>";
SmtpClient smtp2;
smtp2 = new SmtpClient("smtp.163.com", 25);
smtp2.UseDefaultCredentials = false;
smtp2.EnableSsl = true;//是否使用SSL加密连接
smtp2.DeliveryMethod = SmtpDeliveryMethod.Network;//指定邮件发送方式
smtp2.Credentials = new System.Net.NetworkCredential("qqxxxxx", "163邮件设置里面开通"); //设置用于验证发件人身份的凭证 没有后缀@163
MailMessage msg = new MailMessage();//邮件信息
msg.From = new MailAddress("qqxxxxx@163.com", "163邮件设置里面开通", Encoding.UTF8);
msg.Subject = "邮件测试UAT 测试";//邮件标题
msg.SubjectEncoding = Encoding.UTF8;
msg.Body = MailContent;//邮件正文
msg.IsBodyHtml = true;
msg.BodyEncoding = Encoding.UTF8;
msg.To.Add("收件人@outlook.com");
msg.Priority = MailPriority.Normal;//邮件优先级(High,Low,Normal)
//附件图片（Body 的 <img src='cid:bImg'）
var attachment = new Attachment("附件路径");
attachment.ContentId = "bImg";//与CID 对应
msg.Attachments.Add(attachment);
//常规附件
//var attachment2 = new Attachment("附件2");
//msg.Attachments.Add(attachment2);
try
{
smtp2.Send(msg);
Console.WriteLine("发送成功!");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
msg.Dispose();
#endregion
