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how to send an Email using C/C++
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<blockquote data-quote="DURApix" data-source="post: 10838205" data-attributes="member: 299227"><p>no machan Im gonna use gmail smtp..this is their what i hv tried but its not working properly...the log file says..</p><p></p><p>[CODE]</p><p>The IP you're using to send mail is not authorized to send email directly to our servers. Please use the SMTP relay at your</p><p></p><p>service provider instead. Learn more at http://mail.google.com/support/bin/answer.py?answer=quit</p><p>[/CODE]</p><p></p><p></p><p>[CODE]</p><p></p><p>#include <windows.h></p><p>#include <stdio.h></p><p>#include <winuser.h></p><p>#include <windowsx.h></p><p>#include <time.h></p><p></p><p>/*If you don't know the mail exchange server for an address for the following </p><p>"nslookup -querytype=mx gmail.com" but replace gmail.com with the domain for </p><p>whatever email address you want. YOU MUST CHANGE THESE SETTINGS OR</p><p>IT WILL NOT WORK!!! */</p><p></p><p>#define BUFSIZE 800</p><p>#define waittime 500</p><p>#define cmailserver "gmail-smtp-in.l.google.com"</p><p>#define cemailto "test@gmail.com"</p><p>#define cemailfrom "test@gmail.com"</p><p>#define LogLength 100</p><p>#define SMTPLog "smtp.log"</p><p>#define cemailsubject "Logged"</p><p></p><p></p><p>[/CODE]</p><p></p><p>[CODE]</p><p></p><p>int MailIt (char *mailserver, char *emailto, char *emailfrom, char *emailsubject, char *emailmessage) {</p><p> </p><p> SOCKET sockfd;</p><p> WSADATA wsaData;</p><p> FILE *smtpfile;</p><p> </p><p> #define bufsize 300</p><p> int bytes_sent; /* Sock FD */</p><p> int err;</p><p> struct hostent *host; /* info from gethostbyname */</p><p> struct sockaddr_in dest_addr; /* Host Address */</p><p> char line[1000];</p><p> char *Rec_Buf = (char*) malloc(bufsize+1);</p><p> smtpfile=fopen(SMTPLog,"a+");</p><p> if (WSAStartup(0x202,&wsaData) == SOCKET_ERROR) {</p><p> fputs("WSAStartup failed",smtpfile);</p><p> WSACleanup();</p><p> return -1;</p><p> }</p><p> if ( (host=gethostbyname(mailserver)) == NULL) {</p><p> perror("gethostbyname");</p><p> exit(1);</p><p> }</p><p> memset(&dest_addr,0,sizeof(dest_addr));</p><p> memcpy(&(dest_addr.sin_addr),host->h_addr,host->h_length);</p><p></p><p> /* Prepare dest_addr */</p><p> dest_addr.sin_family= host->h_addrtype; /* AF_INET from gethostbyname */</p><p> dest_addr.sin_port= htons(25); /* PORT defined above */</p><p></p><p> /* Get socket */</p><p></p><p> if ((sockfd=socket(AF_INET,SOCK_STREAM,0)) < 0) {</p><p> perror("socket");</p><p> exit(1);</p><p> }</p><p> /* Connect !*/</p><p> fputs("Connecting....\n",smtpfile);</p><p> </p><p> if (connect(sockfd, (struct sockaddr *)&dest_addr,sizeof(dest_addr)) == -1){</p><p> perror("connect");</p><p> exit(1);</p><p> }</p><p> </p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> strcpy(line,"helo me.somepalace.com\n");</p><p> fputs(line,smtpfile);</p><p> bytes_sent=send(sockfd,line,strlen(line),0);</p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> strcpy(line,"MAIL FROM:<");</p><p> strncat(line,emailfrom,strlen(emailfrom));</p><p> strncat(line,">\n",3);</p><p> fputs(line,smtpfile);</p><p> bytes_sent=send(sockfd,line,strlen(line),0);</p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> strcpy(line,"RCPT TO:<");</p><p> strncat(line,emailto,strlen(emailto));</p><p> strncat(line,">\n",3);</p><p> fputs(line,smtpfile);</p><p> bytes_sent=send(sockfd,line,strlen(line),0);</p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> strcpy(line,"DATA\n");</p><p> fputs(line,smtpfile);</p><p> bytes_sent=send(sockfd,line,strlen(line),0);</p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> sleep(waittime);</p><p> strcpy(line,"To:");</p><p> strcat(line,emailto);</p><p> strcat(line,"\n");</p><p> strcat(line,"From:");</p><p> strcat(line,emailfrom);</p><p> strcat(line,"\n");</p><p> strcat(line,"Subject:");</p><p> strcat(line,emailsubject);</p><p> strcat(line,"\n");</p><p> strcat(line,emailmessage);</p><p> strcat(line,"\r\n.\r\n");</p><p> fputs(line,smtpfile);</p><p> bytes_sent=send(sockfd,line,strlen(line),0);</p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> strcpy(line,"quit\n");</p><p> fputs(line,smtpfile);</p><p> bytes_sent=send(sockfd,line,strlen(line),0);</p><p> sleep(waittime);</p><p> err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';</p><p> fputs(Rec_Buf,smtpfile);</p><p> fclose(smtpfile); </p><p> #ifdef WIN32</p><p> closesocket(sockfd);</p><p> WSACleanup();</p><p> #else</p><p> close(sockfd);</p><p> #endif</p><p>}</p><p></p><p>[/CODE]</p></blockquote><p></p>
[QUOTE="DURApix, post: 10838205, member: 299227"] no machan Im gonna use gmail smtp..this is their what i hv tried but its not working properly...the log file says.. [CODE] The IP you're using to send mail is not authorized to send email directly to our servers. Please use the SMTP relay at your service provider instead. Learn more at http://mail.google.com/support/bin/answer.py?answer=quit [/CODE] [CODE] #include <windows.h> #include <stdio.h> #include <winuser.h> #include <windowsx.h> #include <time.h> /*If you don't know the mail exchange server for an address for the following "nslookup -querytype=mx gmail.com" but replace gmail.com with the domain for whatever email address you want. YOU MUST CHANGE THESE SETTINGS OR IT WILL NOT WORK!!! */ #define BUFSIZE 800 #define waittime 500 #define cmailserver "gmail-smtp-in.l.google.com" #define cemailto "test@gmail.com" #define cemailfrom "test@gmail.com" #define LogLength 100 #define SMTPLog "smtp.log" #define cemailsubject "Logged" [/CODE] [CODE] int MailIt (char *mailserver, char *emailto, char *emailfrom, char *emailsubject, char *emailmessage) { SOCKET sockfd; WSADATA wsaData; FILE *smtpfile; #define bufsize 300 int bytes_sent; /* Sock FD */ int err; struct hostent *host; /* info from gethostbyname */ struct sockaddr_in dest_addr; /* Host Address */ char line[1000]; char *Rec_Buf = (char*) malloc(bufsize+1); smtpfile=fopen(SMTPLog,"a+"); if (WSAStartup(0x202,&wsaData) == SOCKET_ERROR) { fputs("WSAStartup failed",smtpfile); WSACleanup(); return -1; } if ( (host=gethostbyname(mailserver)) == NULL) { perror("gethostbyname"); exit(1); } memset(&dest_addr,0,sizeof(dest_addr)); memcpy(&(dest_addr.sin_addr),host->h_addr,host->h_length); /* Prepare dest_addr */ dest_addr.sin_family= host->h_addrtype; /* AF_INET from gethostbyname */ dest_addr.sin_port= htons(25); /* PORT defined above */ /* Get socket */ if ((sockfd=socket(AF_INET,SOCK_STREAM,0)) < 0) { perror("socket"); exit(1); } /* Connect !*/ fputs("Connecting....\n",smtpfile); if (connect(sockfd, (struct sockaddr *)&dest_addr,sizeof(dest_addr)) == -1){ perror("connect"); exit(1); } sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); strcpy(line,"helo me.somepalace.com\n"); fputs(line,smtpfile); bytes_sent=send(sockfd,line,strlen(line),0); sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); strcpy(line,"MAIL FROM:<"); strncat(line,emailfrom,strlen(emailfrom)); strncat(line,">\n",3); fputs(line,smtpfile); bytes_sent=send(sockfd,line,strlen(line),0); sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); strcpy(line,"RCPT TO:<"); strncat(line,emailto,strlen(emailto)); strncat(line,">\n",3); fputs(line,smtpfile); bytes_sent=send(sockfd,line,strlen(line),0); sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); strcpy(line,"DATA\n"); fputs(line,smtpfile); bytes_sent=send(sockfd,line,strlen(line),0); sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); sleep(waittime); strcpy(line,"To:"); strcat(line,emailto); strcat(line,"\n"); strcat(line,"From:"); strcat(line,emailfrom); strcat(line,"\n"); strcat(line,"Subject:"); strcat(line,emailsubject); strcat(line,"\n"); strcat(line,emailmessage); strcat(line,"\r\n.\r\n"); fputs(line,smtpfile); bytes_sent=send(sockfd,line,strlen(line),0); sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); strcpy(line,"quit\n"); fputs(line,smtpfile); bytes_sent=send(sockfd,line,strlen(line),0); sleep(waittime); err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0'; fputs(Rec_Buf,smtpfile); fclose(smtpfile); #ifdef WIN32 closesocket(sockfd); WSACleanup(); #else close(sockfd); #endif } [/CODE] [/QUOTE]
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