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c:ehlo hostname s:250-smtp.263.net 250-pipelining 250-size 10240000 250-etrn 250-auth login 250-8bitmime 以上是与邮件服务器连接，即nmsmtp1->connect,以下是连接后的验证： c:auth login s:334VXNlcm5hbWU6（username:) c:b(你的用户名转换成base64码） s:334UGFzc3dvcmQ6(password:) c:x（你的密码转换成base64码） nmsmtp有个transaction方法,在onconnect事件中加入验证过程， nmsmtp1->transaction("auth login"),返回值是334表示通过，可以继续下面的 nmsmtp1->transaction（你的用户名转换成base64码） nmsmtp1->transaction(你的密码转换成base64码) 如果返回235表示验证成功，你就可以发邮件了 linzi(林子) (2001-4-19 10:46:00) 得0分 //这是我写的一个演示程序， //窗体上有一个BUTTON控件，一个LABEL控件，一个NMSMTP控件 //带密码险证的邮件发送程序需要BASE64编码，DecodeBase64和 EncodeBase64 //为解码和编码函数 //在263、163和SOHU上都能发送成功 unit Unit1; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, Psock, NMsmtp, ComCtrls; type TForm1 = class(TForm) NMSMTP1: TNMSMTP; Button1: TButton; Label1: TLabel; procedure Button1Click(Sender: TObject); procedure NMSMTP1Connect(Sender: TObject); procedure NMSMTP1InvalidHost(var Handled: Boolean); procedure NMSMTP1ConnectionFailed(Sender: TObject); procedure NMSMTP1Status(Sender: TComponent; Status: String); procedure NMSMTP1SendStart(Sender: TObject); procedure NMSMTP1Success(Sender: TObject); private { Private declarations } public { Public declarations } end; //BaseTable为BASE64码表 const BaseTable:string='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; var Form1: TForm1; AuthSucc:boolean;// 是否需要密码验证 function DecodeBase64(Source:string):string; //解码函数 function FindInTable(CSource:char):integer; // function EncodeBase64(Source:string):string; //编码函数 implementation {$R *.DFM} // function FindInTable(CSource:char):integer; begin result:=Pos(string(CSource),BaseTable)-1; end; //// function DecodeBase64(Source:string):string; var SrcLen,Times,i:integer; x1,x2,x3,x4,xt:byte; begin result:=''; SrcLen:=Length(Source); Times:=SrcLen div 4; for i:=0 to Times-1 do begin x1:=FindInTable(Source[1+i*4]); x2:=FindInTable(Source[2+i*4]); x3:=FindInTable(Source[3+i*4]); x4:=FindInTable(Source[4+i*4]); x1:=x1 shl 2; xt:=x2 shr 4; x1:=x1 or xt; x2:=x2 shl 4; result:=result+chr(x1); if x3= 64 then break; xt:=x3 shr 2; x2:=x2 or xt; x3:=x3 shl 6; result:=result+chr(x2); if x4=64 then break; x3:=x3 or x4; result:=result+chr(x3); end; end; ///// function EncodeBase64(Source:string):string; var Times,LenSrc,i:integer; x1,x2,x3,x4:char; xt:byte; begin result:=''; LenSrc:=length(Source); if LenSrc mod 3 =0 then Times:=LenSrc div 3 else Times:=LenSrc div 3 + 1; for i:=0 to times-1 do begin if LenSrc >= (3+i*3) then begin x1:=BaseTable[(ord(Source[1+i*3]) shr 2)+1]; xt:=(ord(Source[1+i*3]) shl 4) and 48; xt:=xt or (ord(Source[2+i*3]) shr 4); x2:=BaseTable[xt+1]; xt:=(Ord(Source[2+i*3]) shl 2) and 60; xt:=xt or (ord(Source[3+i*3]) shr 6); x3:=BaseTable[xt+1]; xt:=(ord(Source[3+i*3]) and 63); x4:=BaseTable[xt+1]; end else if LenSrc>=(2+i*3) then begin x1:=BaseTable[(ord(Source[1+i*3]) shr 2)+1]; xt:=(ord(Source[1+i*3]) shl 4) and 48; xt:=xt or (ord(Source[2+i*3]) shr 4); x2:=BaseTable[xt+1]; xt:=(ord(Source[2+i*3]) shl 2) and 60; x3:=BaseTable[xt+1]; x4:='='; end else begin x1:=BaseTable[(ord(Source[1+i*3]) shr 2)+1]; xt:=(ord(Source[1+i*3]) shl 4) and 48; x2:=BaseTable[xt+1]; x3:='='; x4:='='; end; result:=result+x1+x2+x3+x4; end; end; ////////// procedure TForm1.Button1Click(Sender: TObject); var MailTo,MailBody:TStringList; begin Nmsmtp1.Host :='smtp.sohu.com'; nmsmtp1.Port :=25; nmsmtp1.UserID :='linbch';//发信人的用户名，必须是真实的 nmsmtp1.ReportLevel :=1; Nmsmtp1.TimeOut :=10000; nmsmtp1.Connect ; ///连接 if AuthSucc=true then ////验证成功 begin MailTo:=TStringList.Create; MailTo.Add('cunmin1@163.net'); MailBody.Add('Hello it is a test'); nmsmtp1.PostMessage.FromAddress:='linbch@sohu.com'; //发信人的电子邮件地址 nmsmtp1.PostMessage.ToAddress :=MailTo; nmsmtp1.PostMessage.Body:=MailBody; nmsmtp1.PostMessage.Subject :='My test'; Mailto.Clear ; //Mailto.Add('c:\a.txt'); //Mailto.Add('c:\b.txt'); //nmsmtp1.PostMessage.Attachments:=MailTo; 附件 MailTo.Free ; MailBody.Free; nmsmtp1.SendMail; end; end; procedure TForm1.NMSMTP1Connect(Sender: TObject); begin //////连接成功，下面用户认证过程 label1.caption:=nmsmtp1.Status; if nmsmtp1.ReplyNumber = 250 then label1.caption:=nmsmtp1.Transaction('auth login'); //开始认证 if nmsmtp1.ReplyNumber =334 then //返回值为334，让你输入用BASE64编码后的用户名 label1.caption:=nmsmtp1.Transaction('YWFhYWE=');// 用户名aaaaa if nmsmtp1.ReplyNumber =334 then // 返回值为334，让你输入用BASE64编码后的用户密码 label1.caption:=nmsmtp1.Transaction('MTIzNDU2'); //密码为123456 if nmsmtp1.ReplyNumber =235 then begin label1.caption:='successful'; AuthSucc:=true; end; //showmessage(label1.caption); end; procedure TForm1.NMSMTP1InvalidHost(var Handled: Boolean); begin label1.caption :='Invalid Host'; end; procedure TForm1.NMSMTP1ConnectionFailed(Sender: TObject); begin label1.caption :='connect failed'; end; procedure TForm1.NMSMTP1Status(Sender: TComponent; Status: String); begin label1.caption :=nmsmtp1.Status ; end; procedure TForm1.NMSMTP1SendStart(Sender: TObject); begin label1.Caption :='start send'; end; procedure TForm1.NMSMTP1Success(Sender: TObject); begin label1.Caption:='send success!'; end; end. 回复人：linzi(林子) (2001-4-19 17:05:00) 得0分 上面是用DELPHI写的，发送部分基本是一样的都是在CONNECT中验证，下面是C++ BUILDER写的BASE64编码解码程序，请多多指教： //--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "Unit2.h" const AnsiString BaseTable="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; byte FindInTable(byte c); //--------------------------------------------------------------------------- #pragma package(smart_init) //// AnsiString DecodeBase64(AnsiString Source) { byte x1,x2,x3,x4,xt; int SrcLen,Times,i; AnsiString Result; Result=""; SrcLen=Source.Length(); Times=SrcLen / 4; for(i=0;i<Times;i++) { x1=FindInTable(Source[1+i*4]); x2=FindInTable(Source[2+i*4]); x3=FindInTable(Source[3+i*4]); x4=FindInTable(Source[4+i*4]); x1<<=2; xt=x2>>4; x1=x1 | xt; Result+=char(x1); //ShowMessage(char(x1)); x2<<=4; if (x3==64) break;//x3 不是"="号 xt=x3>>2; x2=x2 | xt; x3<<=6; Result+=char(x2); if (x4==64) break; x3=x3 | x4; Result+=char(x3); } return Result; } ////////// AnsiString EncodeBase64(AnsiString Source) { int Times,LenSrc,i; unsigned char x1,x2,x3,x4,xt,xt1; AnsiString Result; Result=""; LenSrc=Source.Length(); if (LenSrc % 3==0) Times=LenSrc/3; else Times=LenSrc/3+1; for(i=0;i<Times;i++) { if (LenSrc>=(3*i+3)) { xt=Source[1+i*3]; xt>>=2; x1=BaseTable[xt+1]; xt=Source[1+i*3]; xt<<=4; xt&=48; xt1=Source[2+i*3]; xt1>>=4; xt|=xt1; x2=BaseTable[xt+1]; xt=Source[2+i*3]; xt<<=2; xt&=60; xt1=Source[3+i*3]; xt1>>=6; xt|=xt1; x3=BaseTable[xt+1]; xt=Source[3+i*3] ; xt&=63; x4=BaseTable[xt+1]; } else if (LenSrc>=3*i+2) { xt=Source[1+i*3]; xt>>=2; x1=BaseTable[xt+1]; xt=Source[1+i*3]; xt<<=4; xt&=48; xt1=Source[2+i*3]; xt1>>=4; xt|=xt1; x2=BaseTable[xt+1]; xt=Source[2+i*3]; xt<<=2; xt&= 60; x3=BaseTable[xt+1]; x4='='; } else { xt=Source[1+i*3]; xt>>=2; x1=BaseTable[xt+1]; xt=Source[1+i*3] ; xt<<=4; xt&=48; x2=BaseTable[xt+1]; x3='='; x4='='; } Result+=char(x1); Result+=char(x2); Result+=char(x3); Result+=char(x4); } return Result; } /////////// byte FindInTable(byte c) { //ShowMessage(char(c)); return BaseTable.Pos(char(c))-1; }
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