D6JIEFENGMAIL/mailtools/SendmaillTool.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Net;
using MailAnalyzeTools.Common;
using System.Data;
using MailAnalyzeTools.Models;

namespace MailAnalyzeTools
{
    class SendmaillTool
    {

   

        /// <summary>
    /// C#发送邮件函数
    /// </summary>
    /// <param name="from">发送者邮箱</param>
    /// <param name="fromer">发送人</param>
    /// <param name="to">收件人邮箱</param>
    /// <param name="toer">收件人</param>
    /// <param name="Subject">主题</param>
    /// <param name="Body">内容</param>
    /// <param name="file">附件</param>
    /// <param name="SMTPHost">smtp服务器</param>est
    /// <param name="SMTPuser">邮箱</param>
    /// <param name="SMTPpass">密码</param>

    /// <returns></returns>
        public static bool sendmail(string sfrom, string sfromer, string sto, string cc, bool isbodyHtml, string sSubject, string sBody, string sfile, string sSMTPHost, string sSMTPPort, string sSMTPuser, string sSMTPpass, out string errinfo)
    {
        errinfo = "";
        ////设置from和to地址
        var user_addresses = sto.Split(',').ToList<string>();
        MailAddress from = new MailAddress(sfrom, sfromer);
        //MailAddress to = new MailAddress(sto, stoer);

        ////创建一个MailMessage对象
        MailMessage oMail = new MailMessage( );
         
        oMail.From = from;
        //支持多邮件地址:逗号分割
        for (int i = 0; i < user_addresses.Count; i++)
              {
                  oMail.To.Add(user_addresses[i]);
              }
        //抄送
        if (!string.IsNullOrEmpty(cc))
        {
                var cc_addresses = cc.Split(',').ToList<string>();
                for (int i = 0; i < cc_addresses.Count; i++)
                {
                    oMail.CC.Add(cc_addresses[i]);
                }
        
        }
 
        //密送
 //       oMail.Bcc.Add("admin@dongshengsoft.com");
        //多附件:半角分号分割
        if (!string.IsNullOrEmpty(sfile))
        {
            var sfiles = sfile.Split(';').ToList() ;
            foreach (var itemFile in sfiles)
            {
                if (System.IO.File.Exists(itemFile))
                {
                    oMail.Attachments.Add(new Attachment(itemFile));
                }
                else
                {
                    errinfo += string.Format("附件{0}不存在或者不可访问\n", itemFile);
                }
            }
          
        }
        //oMail.To.Add();

        ////邮件标题,避免中文乱码 2018-02-22
        oMail.SubjectEncoding = System.Text.Encoding.UTF8;
        oMail.Subject = sSubject;

        
        ////邮件内容
        oMail.Body = sBody;

        ////邮件格式
        oMail.IsBodyHtml = isbodyHtml;     
        oMail.BodyEncoding = System.Text.Encoding.UTF8;

            ////设置邮件的优先级为高:0正常,1低,2高
            //oMail.Priority = MailPriority.High;

            ////发送邮件
            if (sSMTPPort == "")
            {
                sSMTPPort = "25";
            }

            SmtpClient client = new SmtpClient(sSMTPHost, int.Parse(sSMTPPort));
            System.Net.NetworkCredential nc = new System.Net.NetworkCredential(sSMTPuser, sSMTPpass);
            client.Credentials = nc;


            ////client.UseDefaultCredentials = false; 
            //client.Host = sSMTPHost;
        //    client.Credentials = new NetworkCredential(sSMTPuser, sSMTPpass);
        //client.DeliveryMethod = SmtpDeliveryMethod.Network;

        //如果 System.Net.Mail.SmtpClient 使用 SSL，则为 true；否则为 false。默认值为 false。
       //client.EnableSsl=true;?
        //if (sSMTPPort == "")
        //{
        //    sSMTPPort = "25";
        //}
        //client.Port = int.Parse( sSMTPPort);
        try
        {
            client.Send(oMail);
            return true;
        }
        catch (Exception err)
        {
            LogHelper.WriteLog(sSubject+":自动转发失败", err.Message);
            errinfo += err.Message;
            return false; 
        }
        finally
        {
            ////释放资源
            oMail.Dispose();
        }

    }
    
    }


}