username@email.com
2025-05-21 a980cd04341d71216e0f59bd4b7327fe9fc50032
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using CY.Infrastructure.Common;
using System.Net.Sockets;
using System.Collections;
 
namespace CY.Infrastructure.Mail
{
    #region 邮件发送程序
 
    /// <summary>
    /// Discuz!NT邮件发送程序
    /// </summary>
    [SmtpEmail("邮件发送程序", Version = "2.0", Author = "zg", DllFileName = "CY.Infrastructure.dll")]
    public class SmtpMail : ISmtpMail
    {
 
        private string enter = "\r\n";
 
        /// <summary>
        /// 设定语言代码,默认设定为GB2312,如不需要可设置为""
        /// </summary>
        private string _charset = "GB2312";
 
        /// <summary>
        /// 发件人地址
        /// </summary>
        private string _from = "";
 
        /// <summary>
        /// 发件人姓名
        /// </summary>
        private string _fromName = "";
 
        /// <summary>
        /// 回复邮件地址
        /// </summary>
        ///public string ReplyTo="";
 
        /// <summary>
        /// 收件人姓名
        /// </summary>    
        private string _recipientName = "";
 
        /// <summary>
        /// 收件人列表
        /// </summary>
        private Hashtable Recipient = new Hashtable();
 
        /// <summary>
        /// 邮件服务器域名
        /// </summary>    
        private string mailserver = "";
 
        /// <summary>
        /// 邮件服务器端口号
        /// </summary>    
        private int mailserverport = 25;
 
        /// <summary>
        /// SMTP认证时使用的用户名
        /// </summary>
        private string username = "";
 
        /// <summary>
        /// SMTP认证时使用的密码
        /// </summary>
        private string password = "";
 
        /// <summary>
        /// 是否需要SMTP验证
        /// </summary>        
        private bool ESmtp = false;
 
        /// <summary>
        /// 是否Html邮件
        /// </summary>        
        private bool _html = false;
 
 
        /// <summary>
        /// 邮件附件列表
        /// </summary>
        private IList Attachments;
 
        /// <summary>
        /// 邮件发送优先级,可设置为"High","Normal","Low"或"1","3","5"
        /// </summary>
        private string priority = "Normal";
 
        /// <summary>
        /// 邮件主题
        /// </summary>        
        private string _subject;
 
        /// <summary>
        /// 邮件正文
        /// </summary>        
        private string _body;
 
        /// <summary>
        /// 密送收件人列表
        /// </summary>
        ///private Hashtable RecipientBCC=new Hashtable();
 
        /// <summary>
        /// 收件人数量
        /// </summary>
        private int RecipientNum = 0;
 
        /// <summary>
        /// 最多收件人数量
        /// </summary>
        private int recipientmaxnum = 5;
 
        /// <summary>
        /// 密件收件人数量
        /// </summary>
        ///private int RecipientBCCNum=0;
 
        /// <summary>
        /// 错误消息反馈
        /// </summary>
        private string errmsg;
 
        /// <summary>
        /// TcpClient对象,用于连接服务器
        /// </summary>    
        private TcpClient tc;
 
        /// <summary>
        /// NetworkStream对象
        /// </summary>    
        private NetworkStream ns;
 
        /// <summary>
        /// 服务器交互记录
        /// </summary>
        private string logs = "";
 
        /// <summary>
        /// SMTP错误代码哈希表
        /// </summary>
        private Hashtable ErrCodeHT = new Hashtable();
 
        /// <summary>
        /// SMTP正确代码哈希表
        /// </summary>
        private Hashtable RightCodeHT = new Hashtable();
 
 
        /// <summary>
        /// </summary>
        public SmtpMail()
        {
            Attachments = new System.Collections.ArrayList();
            SMTPCodeAdd();
        }
 
        #region Properties
 
 
        /// <summary>
        /// 邮件主题
        /// </summary>
        public string Subject
        {
            get
            {
                return this._subject;
            }
            set
            {
                this._subject = value;
            }
        }
 
        /// <summary>
        /// 邮件正文
        /// </summary>
        public string Body
        {
            get
            {
                return this._body;
            }
            set
            {
                this._body = value;
            }
        }
 
 
        /// <summary>
        /// 发件人地址
        /// </summary>
        public string From
        {
            get
            {
                return _from;
            }
            set
            {
                this._from = value;
            }
        }
 
        /// <summary>
        /// 设定语言代码,默认设定为GB2312,如不需要可设置为""
        /// </summary>
        public string Charset
        {
            get
            {
                return this._charset;
            }
            set
            {
                this._charset = value;
            }
        }
 
        /// <summary>
        /// 发件人姓名
        /// </summary>
        public string FromName
        {
            get
            {
                return this._fromName;
            }
            set
            {
                this._fromName = value;
            }
        }
 
        /// <summary>
        /// 收件人姓名
        /// </summary>
        public string RecipientName
        {
            get
            {
                return this._recipientName;
            }
            set
            {
                this._recipientName = value;
            }
        }
 
        /// <summary>
        /// 邮件服务器域名和验证信息
        /// 形如:"user:pass@www.server.com:25",也可省略次要信息。如"user:pass@www.server.com"或"www.server.com"
        /// </summary>    
        public string MailDomain
        {
            set
            {
                string maidomain = value.Trim();
                int tempint;
 
                if (maidomain != "")
                {
                    tempint = maidomain.IndexOf("@");
                    if (tempint != -1)
                    {
                        string str = maidomain.Substring(0, tempint);
                        MailServerUserName = str.Substring(0, str.IndexOf(":"));
                        MailServerPassWord = str.Substring(str.IndexOf(":") + 1, str.Length - str.IndexOf(":") - 1);
                        maidomain = maidomain.Substring(tempint + 1, maidomain.Length - tempint - 1);
                    }
 
                    tempint = maidomain.IndexOf(":");
                    if (tempint != -1)
                    {
                        mailserver = maidomain.Substring(0, tempint);
                        mailserverport = System.Convert.ToInt32(maidomain.Substring(tempint + 1, maidomain.Length - tempint - 1));
                    }
                    else
                    {
                        mailserver = maidomain;
 
                    }
 
 
                }
 
            }
        }
 
 
 
        /// <summary>
        /// 邮件服务器端口号
        /// </summary>    
        public int MailDomainPort
        {
            set
            {
                mailserverport = value;
            }
        }
 
 
 
        /// <summary>
        /// SMTP认证时使用的用户名
        /// </summary>
        public string MailServerUserName
        {
            set
            {
                if (value.Trim() != "")
                {
                    username = value.Trim();
                    ESmtp = true;
                }
                else
                {
                    username = "";
                    ESmtp = false;
                }
            }
        }
 
        /// <summary>
        /// SMTP认证时使用的密码
        /// </summary>
        public string MailServerPassWord
        {
            set
            {
                password = value;
            }
        }
 
 
        public string ErrCodeHTMessage(string code)
        {
            return ErrCodeHT[code].ToString();
        }
        /// <summary>
        /// 邮件发送优先级,可设置为"High","Normal","Low"或"1","3","5"
        /// </summary>
        public string Priority
        {
            set
            {
                switch (value.ToLower())
                {
                    case "high":
                        priority = "High";
                        break;
 
                    case "1":
                        priority = "High";
                        break;
 
                    case "normal":
                        priority = "Normal";
                        break;
 
                    case "3":
                        priority = "Normal";
                        break;
 
                    case "low":
                        priority = "Low";
                        break;
 
                    case "5":
                        priority = "Low";
                        break;
 
                    default:
                        priority = "High";
                        break;
                }
            }
        }
 
        /// <summary>
        ///  是否Html邮件
        /// </summary>
        public bool Html
        {
            get
            {
                return this._html;
            }
            set
            {
                this._html = value;
            }
        }
 
 
        /// <summary>
        /// 错误消息反馈
        /// </summary>        
        public string ErrorMessage
        {
            get
            {
                return errmsg;
            }
        }
 
        /// <summary>
        /// 服务器交互记录
        /// </summary>
        public string Logs
        {
            get
            {
                return logs;
            }
        }
 
        /// <summary>
        /// 最多收件人数量
        /// </summary>
        public int RecipientMaxNum
        {
            set
            {
                recipientmaxnum = value;
            }
        }
 
 
        #endregion
 
        #region Methods
 
 
        /// <summary>
        /// 添加邮件附件
        /// </summary>
        /// <param name="FilePath">附件绝对路径</param>
        public void AddAttachment(params string[] FilePath)
        {
            if (FilePath == null)
            {
                throw (new ArgumentNullException("FilePath"));
            }
            for (int i = 0; i < FilePath.Length; i++)
            {
                Attachments.Add(FilePath[i]);
            }
        }
 
        /// <summary>
        /// 添加一组收件人(不超过recipientmaxnum个),参数为字符串数组
        /// </summary>
        /// <param name="Recipients">保存有收件人地址的字符串数组(不超过recipientmaxnum个)</param>    
        public bool AddRecipient(params string[] Recipients)
        {
            if (Recipient == null)
            {
                Dispose();
                throw (new ArgumentNullException("Recipients"));
            }
            for (int i = 0; i < Recipients.Length; i++)
            {
                string recipient = Recipients[i].Trim();
                if (recipient == String.Empty)
                {
                    Dispose();
                    throw new ArgumentNullException("Recipients[" + i + "]");
                }
                if (recipient.IndexOf("@") == -1)
                {
                    Dispose();
                    throw new ArgumentException("Recipients.IndexOf(\"@\")==-1", "Recipients");
                }
                if (!AddRecipient(recipient))
                {
                    return false;
                }
            }
            return true;
        }
 
        /// <summary>
        /// 发送邮件方法,所有参数均通过属性设置。
        /// </summary>
        public bool Send()
        {
            if (mailserver.Trim() == "")
            {
                throw (new ArgumentNullException("Recipient", "必须指定SMTP服务器"));
            }
 
            return SendEmail();
 
        }
 
 
        /// <summary>
        /// 发送邮件方法
        /// </summary>
        /// <param name="smtpserver">smtp服务器信息,如"username:password@www.smtpserver.com:25",也可去掉部分次要信息,如"www.smtpserver.com"</param>
        public bool Send(string smtpserver)
        {
            MailDomain = smtpserver;
            return Send();
        }
 
 
        /// <summary>
        /// 发送邮件方法
        /// </summary>
        /// <param name="smtpserver">smtp服务器信息,如"username:password@www.smtpserver.com:25",也可去掉部分次要信息,如"www.smtpserver.com"</param>
        /// <param name="from">发件人mail地址</param>
        /// <param name="fromname">发件人姓名</param>
        /// <param name="to">收件人地址</param>
        /// <param name="toname">收件人姓名</param>
        /// <param name="html">是否HTML邮件</param>
        /// <param name="subject">邮件主题</param>
        /// <param name="body">邮件正文</param>
        public bool Send(string smtpserver, string from, string fromname, string to, string toname, bool html, string subject, string body)
        {
            MailDomain = smtpserver;
            From = from;
            FromName = fromname;
            AddRecipient(to);
            RecipientName = toname;
            Html = html;
            Subject = subject;
            Body = body;
            return Send();
        }
 
 
        #endregion
 
        #region Private Helper Functions
 
        /// <summary>
        /// 添加一个收件人
        /// </summary>    
        /// <param name="Recipients">收件人地址</param>
        private bool AddRecipient(string Recipients)
        {
            //修改等待邮件验证的用户重复发送的问题
            Recipient.Clear();
            RecipientNum = 0;
            if (RecipientNum < recipientmaxnum)
            {
                Recipient.Add(RecipientNum, Recipients);
                RecipientNum++;
                return true;
            }
            else
            {
                Dispose();
                throw (new ArgumentOutOfRangeException("Recipients", "收件人过多不可多于 " + recipientmaxnum + " 个"));
            }
        }
 
        void Dispose()
        {
            if (ns != null)
                ns.Close();
            if (tc != null)
                tc.Close();
        }
 
        /// <summary>
        /// SMTP回应代码哈希表
        /// </summary>
        private void SMTPCodeAdd()
        {
            ErrCodeHT.Add("500", "邮箱地址错误");
            ErrCodeHT.Add("501", "参数格式错误");
            ErrCodeHT.Add("502", "命令不可实现");
            ErrCodeHT.Add("503", "服务器需要SMTP验证");
            ErrCodeHT.Add("504", "命令参数不可实现");
            ErrCodeHT.Add("421", "服务未就绪,关闭传输信道");
            ErrCodeHT.Add("450", "要求的邮件操作未完成,邮箱不可用(例如,邮箱忙)");
            ErrCodeHT.Add("550", "要求的邮件操作未完成,邮箱不可用(例如,邮箱未找到,或不可访问)");
            ErrCodeHT.Add("451", "放弃要求的操作;处理过程中出错");
            ErrCodeHT.Add("551", "用户非本地,请尝试<forward-path>");
            ErrCodeHT.Add("452", "系统存储不足, 要求的操作未执行");
            ErrCodeHT.Add("552", "过量的存储分配, 要求的操作未执行");
            ErrCodeHT.Add("553", "邮箱名不可用, 要求的操作未执行(例如邮箱格式错误)");
            ErrCodeHT.Add("432", "需要一个密码转换");
            ErrCodeHT.Add("534", "认证机制过于简单");
            ErrCodeHT.Add("538", "当前请求的认证机制需要加密");
            ErrCodeHT.Add("454", "临时认证失败");
            ErrCodeHT.Add("530", "需要认证");
 
            RightCodeHT.Add("220", "服务就绪");
            RightCodeHT.Add("250", "要求的邮件操作完成");
            RightCodeHT.Add("251", "用户非本地, 将转发向<forward-path>");
            RightCodeHT.Add("354", "开始邮件输入, 以<enter>.<enter>结束");
            RightCodeHT.Add("221", "服务关闭传输信道");
            RightCodeHT.Add("334", "服务器响应验证Base64字符串");
            RightCodeHT.Add("235", "验证成功");
        }
 
 
        /// <summary>
        /// 将字符串编码为Base64字符串
        /// </summary>
        /// <param name="str">要编码的字符串</param>
        private string Base64Encode(string str)
        {
            byte[] barray;
            barray = Encoding.Default.GetBytes(str);
            return Convert.ToBase64String(barray);
        }
 
 
        /// <summary>
        /// 将Base64字符串解码为普通字符串
        /// </summary>
        /// <param name="str">要解码的字符串</param>
        private string Base64Decode(string str)
        {
            byte[] barray;
            barray = Convert.FromBase64String(str);
            return Encoding.Default.GetString(barray);
        }
 
 
        /// <summary>
        /// 得到上传附件的文件流
        /// </summary>
        /// <param name="FilePath">附件的绝对路径</param>
        private string GetStream(string FilePath)
        {
            //建立文件流对象
            System.IO.FileStream FileStr = new System.IO.FileStream(FilePath, System.IO.FileMode.Open);
            byte[] by = new byte[System.Convert.ToInt32(FileStr.Length)];
            FileStr.Read(by, 0, by.Length);
            FileStr.Close();
            return (System.Convert.ToBase64String(by));
        }
 
        /// <summary>
        /// 发送SMTP命令
        /// </summary>    
        private bool SendCommand(string str)
        {
            byte[] WriteBuffer;
            if (str == null || str.Trim() == String.Empty)
            {
                return true;
            }
            logs += str;
            WriteBuffer = Encoding.Default.GetBytes(str);
            try
            {
                ns.Write(WriteBuffer, 0, WriteBuffer.Length);
            }
            catch
            {
                errmsg = "网络连接错误";
                return false;
            }
            return true;
        }
 
        /// <summary>
        /// 接收SMTP服务器回应
        /// </summary>
        private string RecvResponse()
        {
            int StreamSize;
            string ReturnValue = String.Empty;
            byte[] ReadBuffer = new byte[1024];
            try
            {
                StreamSize = ns.Read(ReadBuffer, 0, ReadBuffer.Length);
            }
            catch
            {
                errmsg = "网络连接错误";
                return "false";
            }
 
            if (StreamSize == 0)
            {
                return ReturnValue;
            }
            else
            {
                ReturnValue = Encoding.Default.GetString(ReadBuffer).Substring(0, StreamSize);
                logs += ReturnValue + this.enter;
                return ReturnValue;
            }
        }
 
        /// <summary>
        /// 与服务器交互,发送一条命令并接收回应。
        /// </summary>
        /// <param name="str">一个要发送的命令</param>
        /// <param name="errstr">如果错误,要反馈的信息</param>
        private bool Dialog(string str, string errstr)
        {
            if (str == null || str.Trim() == "")
            {
                return true;
            }
            if (SendCommand(str))
            {
                string RR = RecvResponse();
                if (RR == "false")
                {
                    return false;
                }
                string RRCode = RR.Substring(0, 3);
                if (RightCodeHT[RRCode] != null)
                {
                    return true;
                }
                else
                {
                    if (ErrCodeHT[RRCode] != null)
                    {
                        errmsg += (RRCode + ErrCodeHT[RRCode].ToString());
                        errmsg += enter;
                    }
                    else
                    {
                        errmsg += RR;
                    }
                    errmsg += errstr;
                    return false;
                }
            }
            else
            {
                return false;
            }
 
        }
 
 
        /// <summary>
        /// 与服务器交互,发送一组命令并接收回应。
        /// </summary>
 
        private bool Dialog(string[] str, string errstr)
        {
            for (int i = 0; i < str.Length; i++)
            {
                if (!Dialog(str[i], ""))
                {
                    errmsg += enter;
                    errmsg += errstr;
                    return false;
                }
            }
 
            return true;
        }
 
        /// <summary>
        /// SendEmail
        /// </summary>
        /// <returns></returns>
        private bool SendEmail()
        {
            //连接网络
            try
            {
                tc = new TcpClient(mailserver, mailserverport);
            }
            catch (Exception e)
            {
                errmsg = e.ToString();
                return false;
            }
 
            ns = tc.GetStream();
 
 
            //验证网络连接是否正确
            if (RightCodeHT[RecvResponse().Substring(0, 3)] == null)
            {
                errmsg = "网络连接失败";
                return false;
            }
 
 
            string[] SendBuffer;
            string SendBufferstr;
 
            //进行SMTP验证
            if (ESmtp)
            {
                SendBuffer = new String[4];
                SendBuffer[0] = "EHLO " + mailserver + enter;
                SendBuffer[1] = "AUTH LOGIN" + enter;
                SendBuffer[2] = Base64Encode(username) + enter;
                SendBuffer[3] = Base64Encode(password) + enter;
                if (!Dialog(SendBuffer, "SMTP服务器验证失败,请核对用户名和密码。"))
                    return false;
            }
            else
            {
                SendBufferstr = "HELO " + mailserver + enter;
                if (!Dialog(SendBufferstr, ""))
                    return false;
            }
 
            //
            SendBufferstr = "MAIL FROM:<" + From + ">" + enter;
            if (!Dialog(SendBufferstr, "发件人地址错误,或不能为空"))
                return false;
 
            //
            SendBuffer = new string[recipientmaxnum];
            for (int i = 0; i < Recipient.Count; i++)
            {
                SendBuffer[i] = "RCPT TO:<" + Recipient[i].ToString() + ">" + enter;
 
            }
            if (!Dialog(SendBuffer, "收件人地址有误"))
                return false;
 
            /*
                        SendBuffer=new string[10];
                        for(int i=0;i<RecipientBCC.Count;i++)
                        {
 
                            SendBuffer[i]="RCPT TO:<" + RecipientBCC[i].ToString() +">" + enter;
 
                        }
 
                        if(!Dialog(SendBuffer,"密件收件人地址有误"))
                            return false;
            */
            SendBufferstr = "DATA" + enter;
            if (!Dialog(SendBufferstr, ""))
                return false;
 
            SendBufferstr = "From:" + FromName + "<" + From + ">" + enter;
 
            //if(ReplyTo.Trim()!="")
            //{
            //    SendBufferstr+="Reply-To: " + ReplyTo + enter;
            //}
 
            //SendBufferstr += "To:" + (Discuz.Common.Utils.StrIsNullOrEmpty(RecipientName)?"":Base64Encode(RecipientName)) + "<" + Recipient[0] + ">" + enter;
            SendBufferstr += "To:=?" + Charset.ToUpper() + "?B?" + (Utils.StrIsNullOrEmpty(RecipientName) ? "" : Base64Encode(RecipientName)) + "?=" + "<" + Recipient[0] + ">" + enter;
 
            //注释掉抄送代码
            SendBufferstr += "CC:";
            for (int i = 1; i < Recipient.Count; i++)
            {
                SendBufferstr += Recipient[i].ToString() + "<" + Recipient[i].ToString() + ">,";
            }
            SendBufferstr += enter;
 
            SendBufferstr += ((Subject == String.Empty || Subject == null) ? "Subject:" : ((Charset == "") ? ("Subject:" + Subject) : ("Subject:" + "=?" + Charset.ToUpper() + "?B?" + Base64Encode(Subject) + "?="))) + enter;
            SendBufferstr += "X-Priority:" + priority + enter;
            SendBufferstr += "X-MSMail-Priority:" + priority + enter;
            SendBufferstr += "Importance:" + priority + enter;
            SendBufferstr += "X-Mailer: Lion.Web.Mail.SmtpMail Pubclass [cn]" + enter;
            SendBufferstr += "MIME-Version: 1.0" + enter;
            if (Attachments.Count != 0)
            {
                SendBufferstr += "Content-Type: multipart/mixed;" + enter;
                SendBufferstr += "    boundary=\"=====" + (Html ? "001_Dragon520636771063_" : "001_Dragon303406132050_") + "=====\"" + enter + enter;
            }
 
            if (Html)
            {
                if (Attachments.Count == 0)
                {
                    SendBufferstr += "Content-Type: multipart/alternative;" + enter;//内容格式和分隔符
                    SendBufferstr += "    boundary=\"=====003_Dragon520636771063_=====\"" + enter + enter;
 
                    SendBufferstr += "This is a multi-part message in MIME format." + enter + enter;
                }
                else
                {
                    SendBufferstr += "This is a multi-part message in MIME format." + enter + enter;
                    SendBufferstr += "--=====001_Dragon520636771063_=====" + enter;
                    SendBufferstr += "Content-Type: multipart/alternative;" + enter;//内容格式和分隔符
                    SendBufferstr += "    boundary=\"=====003_Dragon520636771063_=====\"" + enter + enter;
                }
                SendBufferstr += "--=====003_Dragon520636771063_=====" + enter;
                SendBufferstr += "Content-Type: text/plain;" + enter;
                SendBufferstr += ((Charset == "") ? ("    charset=\"iso-8859-1\"") : ("    charset=\"" + Charset.ToLower() + "\"")) + enter;
                SendBufferstr += "Content-Transfer-Encoding: base64" + enter + enter;
                SendBufferstr += Base64Encode("邮件内容为HTML格式,请选择HTML方式查看") + enter + enter;
 
                SendBufferstr += "--=====003_Dragon520636771063_=====" + enter;
 
 
 
                SendBufferstr += "Content-Type: text/html;" + enter;
                SendBufferstr += ((Charset == "") ? ("    charset=\"iso-8859-1\"") : ("    charset=\"" + Charset.ToLower() + "\"")) + enter;
                SendBufferstr += "Content-Transfer-Encoding: base64" + enter + enter;
                SendBufferstr += Base64Encode(Body) + enter + enter;
                SendBufferstr += "--=====003_Dragon520636771063_=====--" + enter;
            }
            else
            {
                if (Attachments.Count != 0)
                {
                    SendBufferstr += "--=====001_Dragon303406132050_=====" + enter;
                }
                SendBufferstr += "Content-Type: text/plain;" + enter;
                SendBufferstr += ((Charset == "") ? ("    charset=\"iso-8859-1\"") : ("    charset=\"" + Charset.ToLower() + "\"")) + enter;
                SendBufferstr += "Content-Transfer-Encoding: base64" + enter + enter;
                SendBufferstr += Base64Encode(Body) + enter;
            }
 
            //SendBufferstr += "Content-Transfer-Encoding: base64"+enter;
 
 
 
 
            if (Attachments.Count != 0)
            {
                for (int i = 0; i < Attachments.Count; i++)
                {
                    string filepath = (string)Attachments[i];
                    SendBufferstr += "--=====" + (Html ? "001_Dragon520636771063_" : "001_Dragon303406132050_") + "=====" + enter;
                    //SendBufferstr += "Content-Type: application/octet-stream"+enter;
                    SendBufferstr += "Content-Type: text/plain;" + enter;
                    SendBufferstr += "    name=\"=?" + Charset.ToUpper() + "?B?" + Base64Encode(filepath.Substring(filepath.LastIndexOf("\\") + 1)) + "?=\"" + enter;
                    SendBufferstr += "Content-Transfer-Encoding: base64" + enter;
                    SendBufferstr += "Content-Disposition: attachment;" + enter;
                    SendBufferstr += "    filename=\"=?" + Charset.ToUpper() + "?B?" + Base64Encode(filepath.Substring(filepath.LastIndexOf("\\") + 1)) + "?=\"" + enter + enter;
                    SendBufferstr += GetStream(filepath) + enter + enter;
                }
                SendBufferstr += "--=====" + (Html ? "001_Dragon520636771063_" : "001_Dragon303406132050_") + "=====--" + enter + enter;
            }
 
 
 
            SendBufferstr += enter + "." + enter;
 
            if (!Dialog(SendBufferstr, "错误信件信息"))
                return false;
 
 
            SendBufferstr = "QUIT" + enter;
            if (!Dialog(SendBufferstr, "断开连接时错误"))
                return false;
 
 
            ns.Close();
            tc.Close();
            return true;
        }
 
 
        #endregion
 
        #region
        /*
        /// <summary>
        /// 添加一个密件收件人
        /// </summary>
        /// <param name="str">收件人地址</param>
        public bool AddRecipientBCC(string str)
        {
            if(str==null||str.Trim()=="")
                return true;
            if(RecipientBCCNum<10)
            {
                RecipientBCC.Add(RecipientBCCNum,str);
                RecipientBCCNum++;
                return true;
            }
            else
            {
                errmsg+="收件人过多";
                return false;
            }
        }
 
 
        /// <summary>
        /// 添加一组密件收件人(不超过10个),参数为字符串数组
        /// </summary>    
        /// <param name="str">保存有收件人地址的字符串数组(不超过10个)</param>
        public bool AddRecipientBCC(string[] str)
        {
            for(int i=0;i<str.Length;i++)
            {
                if(!AddRecipientBCC(str[i]))
                {
                    return false;
                }
            }
            return true;
        }
 
        */
        #endregion
 
        #region ISmtpMail 成员
        //
        ////        public string MailDomainPort
        ////        {
        ////            get
        ////            {
        ////                // TODO:  添加 SmtpMail.MainDomainPort getter 实现
        ////                return null;
        ////            }
        ////            set
        ////            {
        ////                // TODO:  添加 SmtpMail.MainDomainPort setter 实现
        ////            }
        ////        }
        //
        //        string Discuz.Common.ISmtpMail.Priority
        //        {
        //            get
        //            {
        //                // TODO:  添加 SmtpMail.Discuz.Common.ISmtpMail.Priority getter 实现
        //                return null;
        //            }
        //            set
        //            {
        //                // TODO:  添加 SmtpMail.Discuz.Common.ISmtpMail.Priority setter 实现
        //            }
        //        }
        //
        //        public string MainDomain
        //        {
        //            get
        //            {
        //                // TODO:  添加 SmtpMail.MainDomain getter 实现
        //                return null;
        //            }
        //            set
        //            {
        //                // TODO:  添加 SmtpMail.MainDomain setter 实现
        //            }
        //        }
        //
        //        string Discuz.Common.ISmtpMail.MailServerUserName
        //        {
        //            get
        //            {
        //                // TODO:  添加 SmtpMail.Discuz.Common.ISmtpMail.MailServerUserName getter 实现
        //                return null;
        //            }
        //            set
        //            {
        //                // TODO:  添加 SmtpMail.Discuz.Common.ISmtpMail.MailServerUserName setter 实现
        //            }
        //        }
        //
        //        string Discuz.Common.ISmtpMail.MailServerPassWord
        //        {
        //            get
        //            {
        //                // TODO:  添加 SmtpMail.Discuz.Common.ISmtpMail.MailServerPassWord getter 实现
        //                return null;
        //            }
        //            set
        //            {
        //                // TODO:  添加 SmtpMail.Discuz.Common.ISmtpMail.MailServerPassWord setter 实现
        //            }
        //        }
        //
        #endregion
    }
    #endregion
}