how to send mails from VC++ program without using outlook

[lester555]

Please someone help me im trying 1 week to use this code.

I m getting error on this line : if(connect(hServer, (PSOCKADDR) &SockAddr, sizeof(SockAddr)))

Please see error screenshot

This is my code :


#define WIN32_LEAN_AND_MEAN

#include <stdio.h>
#include <iostream>
#include <fstream>
#include <stdlib.h>
//#include <fstream.h>
//#include <iostream.h>
#include <windows.h>
#include <winsock2.h>

using namespace std;

#pragma comment(lib, "ws2_32.lib")

// Insist on at least Winsock v1.1
const int VERSION_MAJOR = 1;
const int VERSION_MINOR = 1;

#define CRLF "\r\n" // carriage-return/line feed pair

void ShowUsage(void)
{
cout << "Usage: SENDMAIL mailserv to_addr from_addr messagefile" << endl
<< "Example: SENDMAIL smtp.myisp.com [email protected] [email protected] message.txt" << endl;

exit(1);
}

// Basic error checking for send() and recv() functions
void Check(int iStatus, char *szFunction)
{
if((iStatus != SOCKET_ERROR) && (iStatus))
return;

cerr << "Error during call to " << szFunction << ": " << iStatus << " - " << GetLastError() << endl;
}

int main(int argc, char *argv[])
{
int iProtocolPort = 587;
char szSmtpServerName[64] = "smtp.gmail.com";
char szToAddr[64] = "[email protected]";
char szFromAddr[64] = "[email protected]";
char szBuffer[4096] = "[email protected]";
char szLine[255] = "vai vai vaiiii";
char szMsgLine[255] = "vai vai vaiiii";
SOCKET hServer;
WSADATA WSData;
LPHOSTENT lpHostEntry;
LPSERVENT lpServEntry;
SOCKADDR_IN SockAddr;

argc = 5;

// Check for four command-line args
if(argc != 5)
ShowUsage();

// Load command-line args
lstrcpy(szSmtpServerName, argv[1]);
lstrcpy(szToAddr, argv[2]);
lstrcpy(szFromAddr, argv[3]);

// Create input stream for reading email message file
string dir = "D:\\file.txt";
ifstream MsgFile(dir);

// Attempt to intialize WinSock (1.1 or later)
if(WSAStartup(MAKEWORD(VERSION_MAJOR, VERSION_MINOR), &WSData))
{
cout << "Cannot find Winsock v" << VERSION_MAJOR << "." << VERSION_MINOR << " or later!" << endl;

return 1;
}

// Lookup email server's IP address.
lpHostEntry = gethostbyname(szSmtpServerName);

if(!lpHostEntry)
{
cout << "Cannot find SMTP mail server " << szSmtpServerName << endl;

return 1;
}

// Create a TCP/IP socket, no specific protocol
hServer = socket(PF_INET, SOCK_STREAM, 0);
if(hServer == INVALID_SOCKET)
{
cout << "Cannot open mail server socket" << endl;

return 1;
}

// Get the mail service port
lpServEntry = getservbyname("mail", 0);


// Use the SMTP default port if no other port is specified
if(!lpServEntry)
iProtocolPort = htons(IPPORT_SMTP);
else
iProtocolPort = lpServEntry->s_port;
//iProtocolPort = 587;

// Setup a Socket Address structure
SockAddr.sin_family = AF_INET;
SockAddr.sin_port = iProtocolPort;
SockAddr.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);

// Connect the Socket

if(connect(hServer, (PSOCKADDR) &SockAddr, sizeof(SockAddr)))
{
cout << "Error connecting to Server socket" << endl;

DWORD err = ::GetLastError();

LPVOID lpMsgBuf;

FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL );

MessageBox( NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION );
cout << (LPCTSTR)lpMsgBuf << endl;
system("pause");
return 1;
}

// Receive initial response from SMTP server
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() Reply");

// Send HELO server.com
sprintf(szMsgLine, "HELO %s%s", szSmtpServerName, CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() HELO");
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() HELO");

// Send MAIL FROM: <[email protected]>
sprintf(szMsgLine, "MAIL FROM:<%s>%s", szFromAddr, CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() MAIL FROM");
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() MAIL FROM");

// Send RCPT TO: <[email protected]>
sprintf(szMsgLine, "RCPT TO:<%s>%s", szToAddr, CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() RCPT TO");
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() RCPT TO");

// Send DATA
sprintf(szMsgLine, "DATA%s", CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() DATA");
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() DATA");

// Send all lines of message body (using supplied text file)
MsgFile.getline(szLine, sizeof(szLine)); // Get first line

do // for each line of message text...
{
sprintf(szMsgLine, "%s%s", szLine, CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() message-line");
MsgFile.getline(szLine, sizeof(szLine)); // get next line.
} while(MsgFile.good());

// Send blank line and a period
sprintf(szMsgLine, "%s.%s", CRLF, CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() end-message");
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() end-message");

// Send QUIT
sprintf(szMsgLine, "QUIT%s", CRLF);
Check(send(hServer, szMsgLine, strlen(szMsgLine), 0), "send() QUIT");
Check(recv(hServer, szBuffer, sizeof(szBuffer), 0), "recv() QUIT");

// Report message has been sent
cout << "Sent " << argv[4] << " as email message to " << szToAddr << endl;

// Close server socket and prepare to exit.
closesocket(hServer);

WSACleanup();

return 0;
}