<>
发送邮件 如果发送人的邮箱用户名与邮箱密码都没有填写错误：如果报：参数或变量中有语法错误。 服务器响应为:mail from address must be same as authorization user错误，问题可能出在authorization user 没授权。如果是QQ邮箱，那么只要进入QQ邮箱，QQ邮箱：设置---账户 找到POP3/IMAP/SMTP服务 都开启。这时候发现可以发送邮件了。
如果报：SMTP 服务器要求安全连接或客户端未通过身份验证。 服务器响应为:Must issue a STARTTLS command first. 可能出现的问题是发送邮件的服务器端口（smtp.Port）配置错误。 例如：smtp.Port = 25
如果报：命令顺序不正确。 服务器响应为:Error: need EHLO and AUTH first ! 很有可能是发件人邮箱的用户名写错了；例如：（smtp.Credentials = new NetworkCredential("邮箱的用户名", "发件人邮箱密码");
如果报：参数或变量中有语法错误。 服务器响应为:mail from address must be same as authorization user 很有可能是发件人邮箱的密码错误了：例如：（smtp.Credentials = new NetworkCredential("邮箱的用户名", "发件人邮箱密码");
==============================================================================
<appSettings>
<!--2015-06-26 Create-->
<!-- Smtp 服务器 -->
<add key="SmtpHost" value="smtp.qq.com" />
<!-- Smtp 服务器端口 -->
<add key="SmtpPort" value="587" />
<!--发送者 Email 地址-->
<add key="FromEmailAddress" value="wowo@qq.com" />
<!--发送者 Email 密码-->
<add key="FormEmailPassword" value="123456789" />
<add key="ToEmailListString" value="123@qq.com;456@qq.com"/>
<add key="CcEmailListString" value="CBA@qq.com"/>
<add key="BccEmailListString" value="NBA@qq.com"/>
</appSettings>
using CFPS_Redesign;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace MVC发送邮件测试.Controllers
{
public class HomeController : Controller
{
//
// GET: /Home/
public ActionResult SendEmail()
{
EmailHelper eh = new EmailHelper("邮件的主题", "你什么时候过来吃饭？");
if (eh.SendEmail())
{
return View();
}
else
{
return Content("on");
}
}
}
}using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Text;
namespace CFPS_Redesign
{
/// <summary>
/// Author : Bin
/// Date : 2015-06-26
/// Description : 邮件发送辅助类
/// </summary>
public class EmailHelper
{
#region [ 属性(发送Email相关) ]
private string _SmtpHost = string.Empty;
private int _SmtpPort = -1;
private string _FromEmailAddress = string.Empty;
private string _FormEmailPassword = string.Empty;
private string _ToEmailListString = string.Empty;
private string _CcEmailListString = string.Empty;
private string _BccEmailListString = string.Empty;
/// <summary>
/// smtp 服务器
/// </summary>
public string SmtpHost
{
get
{
if (string.IsNullOrEmpty(_SmtpHost))
{
_SmtpHost = ConfigurationManager.AppSettings["SmtpHost"];
}
return _SmtpHost;
}
}
/// <summary>
/// smtp 服务器端口 默认为25
/// </summary>
public int SmtpPort
{
get
{
if (_SmtpPort == -1)
{
if (!int.TryParse(ConfigurationManager.AppSettings["SmtpPort"], out _SmtpPort))
{
_SmtpPort = 25;
}
}
return _SmtpPort;
}
}
/// <summary>
/// 发送者 Eamil 地址
/// </summary>
public string FromEmailAddress
{
get
{
if (string.IsNullOrEmpty(_FromEmailAddress))
{
_FromEmailAddress = ConfigurationManager.AppSettings["FromEmailAddress"];
}
return _FromEmailAddress;
}
}
/// <summary>
/// 发送者 Eamil 密码
/// </summary>
public string FormEmailPassword
{
get
{
if (string.IsNullOrEmpty(_FormEmailPassword))
{
_FormEmailPassword = ConfigurationManager.AppSettings["FormEmailPassword"];
}
return _FormEmailPassword;
}
}
#endregion
#region [ 属性(邮件相关) ]
/// <summary>
/// 收件人 Email 列表，多个邮件地址之间用 半角逗号“,”或者分号“;”,或者竖线“|” 等符号分隔开
/// </summary>
public string ToEmailListString
{
get
{
if (string.IsNullOrEmpty(_ToEmailListString))
{
return ConfigurationManager.AppSettings["ToEmailListString"];
}
return _ToEmailListString;
}
set
{
this._ToEmailListString = value;
}
}
/// <summary>
/// 邮件的抄送者，支持群发，多个邮件地址之间用 半角逗号“,”或者分号“;”,或者竖线“|” 等符号分隔开
/// </summary>
public string CcEmailListString
{
get
{
if (string.IsNullOrEmpty(this._CcEmailListString))
{
return ConfigurationManager.AppSettings["CcEmailListString"];
}
return _CcEmailListString;
}
set
{
this._CcEmailListString = value;
}
}
/// <summary>
/// 邮件的密送者，支持群发，多个邮件地址之间用 半角逗号“,”或者分号“;”,或者竖线“|” 等符号分隔开
/// </summary>
public string BccEmailListString
{
get
{
if (string.IsNullOrEmpty(_BccEmailListString))
{
return ConfigurationManager.AppSettings["BccEmail"];
}
return _BccEmailListString;
}
set
{
this._BccEmailListString = value;
}
}
/// <summary>
/// 邮件标题
/// </summary>
public string Subject { get; set; }
/// <summary>
/// 邮件正文
/// </summary>
public string EmailBody { get; set; }
private bool _IsBodyHtml;
/// <summary>
/// 邮件正文是否为Html格式
/// </summary>
public bool IsBodyHtml
{
get { return _IsBodyHtml; }
set { _IsBodyHtml = value; }
}
/// <summary>
/// 附件列表
/// </summary>
public List<Attachment> AttachmentList { get; set; }
#endregion
#region [ 构造函数 ]
/// <summary>
/// 构造函数(EmailBody默认为html格式)
/// </summary>
/// <param name="subject">邮件标题</param>
/// <param name="emailBody">邮件正文</param>
public EmailHelper(string subject, string emailBody)
{
this.Subject = subject;
this.IsBodyHtml = true;
this.EmailBody = emailBody;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="subject">邮件标题</param>
/// <param name="isBodyHtml">邮件正文是否为Html格式</param>
/// <param name="emailBody">邮件正文</param>
public EmailHelper(string subject, bool isBodyHtml, string emailBody)
{
this.Subject = subject;
this.IsBodyHtml = IsBodyHtml;
this.EmailBody = emailBody;
}
/// <summary>
/// 构造函数(EmailBody默认为html格式)
/// </summary>
/// <param name="subject">邮件标题</param>
/// <param name="emailBody">邮件正文</param>
/// <param name="attachmentList">附件列表</param>
public EmailHelper(string subject, string emailBody, List<Attachment> attachmentList)
{
this.Subject = subject;
this.EmailBody = emailBody;
this.AttachmentList = attachmentList;
this.IsBodyHtml = true;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="subject">邮件标题</param>
/// <param name="emailBody">邮件正文</param>
/// <param name="isBodyEmail">邮件正文是否为Html格式</param>
/// <param name="attachmentList">附件列表</param>
public EmailHelper(string subject, string emailBody, bool isBodyEmail, List<Attachment> attachmentList)
{
this.Subject = subject;
this.EmailBody = emailBody;
this.AttachmentList = attachmentList;
}
/// <summary>
/// 构造函数 (EmailBody默认为html格式)
/// </summary>
/// <param name="toList">收件人列表字符串</param>
/// <param name="subject">邮件标题</param>
/// <param name="emailBody">邮件正文</param>
public EmailHelper(string toEmailListString, string subject, string emailBody)
{
this.ToEmailListString = toEmailListString;
this.Subject = subject;
this.EmailBody = emailBody;
this.IsBodyHtml = true;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="toList">收件人列表字符串</param>
/// <param name="subject">邮件标题</param>
/// <param name="isBodyHtml">邮件正文是否为Html格式</param>
/// <param name="emailBody">邮件正文</param>
public EmailHelper(string toEmailListString, string subject, bool isBodyHtml, string emailBody)
{
this.ToEmailListString = toEmailListString;
this.Subject = subject;
this.IsBodyHtml = isBodyHtml;
this.EmailBody = emailBody;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="toEmailListString">收件人列表字符串</param>
/// <param name="ccEmailListString">抄送人列表字符串</param>
/// <param name="subject">邮件标题</param>
/// <param name="isBodyHtml">邮件正文是否为Html格式</param>
/// <param name="emailBody">邮件正文</param>
public EmailHelper(string toEmailListString, string ccEmailListString, string subject, bool isBodyHtml, string emailBody)
{
this.ToEmailListString = toEmailListString;
this.CcEmailListString = ccEmailListString;
this.Subject = subject;
this.IsBodyHtml = isBodyHtml;
this.EmailBody = emailBody;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="toEmailListString">收件人列表字符串</param>
/// <param name="ccEmailListString">抄送人列表字符串</param>
/// <param name="subject">邮件标题</param>
/// <param name="isBodyHtml">邮件正文是否为Html格式</param>
/// <param name="emailBody">邮件正文</param>
/// <param name="attachmentList">附件列表</param>
public EmailHelper(string toEmailListString, string ccEmailListString, string subject, bool isBodyHtml, string emailBody, List<Attachment> attachmentList)
{
this.ToEmailListString = toEmailListString;
this.CcEmailListString = ccEmailListString;
this.Subject = subject;
this.IsBodyHtml = isBodyHtml;
this.EmailBody = emailBody;
this.AttachmentList = attachmentList;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="toEmailListString">收件人列表字符串</param>
/// <param name="ccEmailListString">抄送人列表字符串</param>
/// <param name="bccEmailListString">密送人列表字符串</param>
/// <param name="subject">邮件标题</param>
/// <param name="isBodyHtml">邮件正文是否为Html格式</param>
/// <param name="emailBody">邮件正文</param>
public EmailHelper(string toEmailListString, string ccEmailListString, string bccEmailListString, string subject, bool isBodyHtml, string emailBody)
{
this.ToEmailListString = toEmailListString;
this.CcEmailListString = ccEmailListString;
this.BccEmailListString = bccEmailListString;
this.Subject = subject;
this.IsBodyHtml = isBodyHtml;
this.EmailBody = emailBody;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="toEmailListString">收件人列表字符串</param>
/// <param name="ccEmailListString">抄送人列表字符串</param>
/// <param name="bccEmailListString">密送人列表字符串</param>
/// <param name="subject">邮件标题</param>
/// <param name="isBodyHtml">邮件正文是否为Html格式</param>
/// <param name="emailBody">邮件正文</param>
/// <param name="attachmentList">附件列表</param>
public EmailHelper(string toEmailListString, string ccEmailListString, string bccEmailListString, string subject, bool isBodyHtml, string emailBody, List<Attachment> attachmentList)
{
this.ToEmailListString = toEmailListString;
this.CcEmailListString = ccEmailListString;
this.BccEmailListString = bccEmailListString;
this.Subject = subject;
this.IsBodyHtml = isBodyHtml;
this.EmailBody = emailBody;
this.AttachmentList = attachmentList;
}
#endregion
#region [ 发送邮件 ]
/// <summary>
/// 发送邮件
/// </summary>
/// <returns></returns>
public bool SendEmail()
{
try
{
MailMessage mm = new MailMessage(); //实例化一个邮件类
mm.Priority = MailPriority.Normal; //邮件的优先级，分为 Low, Normal, High，通常用 Normal即可
mm.From = new MailAddress(this.FromEmailAddress, "管理员", Encoding.GetEncoding("GB2312"));
//收件人
if (!string.IsNullOrEmpty(this.ToEmailListString))
{
string[] toEmailArray = this.ToEmailListString.Split(new char[] { ';', ',', '|', ' ' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string toEmail in toEmailArray)
{
mm.To.Add(toEmail.Trim());
}
}
//抄送人
if (!string.IsNullOrEmpty(this.CcEmailListString))
{
string[] CcEmailArray = this.CcEmailListString.Split(new char[] { ';', ',', '|', ' ' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string ccEmail in CcEmailArray)
{
mm.CC.Add(ccEmail.Trim());
}
}
//密送人
if (!string.IsNullOrEmpty(this.BccEmailListString))
{
string[] BccEmailArray = this.BccEmailListString.Split(new char[] { ';', ',', '|', ' ' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string bccEmail in BccEmailArray)
{
mm.Bcc.Add(bccEmail.Trim());
}
}
mm.Subject = this.Subject; //邮件标题
mm.SubjectEncoding = Encoding.GetEncoding("GB2312"); //这里非常重要，如果你的邮件标题包含中文，这里一定要指定，否则对方收到的极有可能是乱码。
mm.IsBodyHtml = this.IsBodyHtml; //邮件正文是否是HTML格式
mm.BodyEncoding = Encoding.GetEncoding("GB2312"); //邮件正文的编码， 设置不正确， 接收者会收到乱码
mm.Body = this.EmailBody; //邮件正文
//邮件附件
if (this.AttachmentList != null && this.AttachmentList.Count > 0)
{
foreach (Attachment attachment in this.AttachmentList)
{
mm.Attachments.Add(attachment);
}
}
SmtpClient smtp = new SmtpClient(); //实例化一个SmtpClient
smtp.DeliveryMethod = SmtpDeliveryMethod.Network; //将smtp的出站方式设为 Network
smtp.EnableSsl = false; //smtp服务器是否启用SSL加密
smtp.Host = this.SmtpHost; //指定 smtp 服务器地址
//smtp.Port = this.SmtpPort; //指定 smtp 服务器的端口，默认是25，如果采用默认端口，可省去
//smtp.UseDefaultCredentials = true; //如果你的SMTP服务器不需要身份认证，则使用下面的方式，不过，目前基本没有不需要认证的了
smtp.Credentials = new NetworkCredential(this.FromEmailAddress, this.FormEmailPassword); //如果需要认证，则用这种方式
//发送邮件，如果不返回异常， 则大功告成了。
smtp.Send(mm);
return true;
}
catch (Exception e)
{
return false;
}
}
#endregion
}
}
原文地址：http://blog.csdn.net/fanbin168/article/details/46674125
