8 replies to this topic

[harkoslav]

Hello guys, I'm C++ beginner and I want to make a program which will send mail. I already searched the whole internet (searching for 3 days... :cursing:) and couldn't make anything work for me, probbably im doing something terribly wrong so I hope you guys can help me. I would be very very grateful.

I found this thread on your forum: http://forum.codecal...p-h-header.html

And it seems to be pretty easy. I went to my compiler (ms visual c++ 2010) and I made new "win32 console application", I pasted the code and I put "smtp.h" as header file. I got whole bunch of some warnings and errors that I don't understand.

So could someone please make this clear for me, tell me what I did wrong. Or could someone tell me some other way how to send email with smtp. I hope you guys can help me! :cool:

[hetra]

I have had similar problems when I began (error messages and such). I am also using Visual C++ 2010 Express Edition.

Try posting the error messages (copy everything in the Output window on).

[harkoslav]

Thanks for the response. Here is my error list.


Error 19 error LNK2019: unresolved external symbol __imp__send@16 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 20 error LNK2019: unresolved external symbol __imp__recv@16 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 21 error LNK2019: unresolved external symbol __imp__connect@12 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 22 error LNK2019: unresolved external symbol __imp__htons@4 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 23 error LNK2019: unresolved external symbol __imp__socket@12 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 24 error LNK2019: unresolved external symbol __imp__WSACleanup@0 referenced in function _main c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 25 error LNK2019: unresolved external symbol __imp__gethostbyname@4 referenced in function _main c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 26 error LNK2019: unresolved external symbol __imp__WSAStartup@8 referenced in function _main c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 27 error LNK1120: 8 unresolved externals c:\users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\Debug\dafsdsdfd aaaaaaaaaa.exe


AND my warnings...



Warning 1 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 122
Warning 2 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 123
Warning 3 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 124
Warning 4 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 131
Warning 5 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 132
Warning 6 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 133
Warning 7 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 140
Warning 8 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 147
Warning 9 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 148
Warning 10 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 149
Warning 11 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 152
Warning 12 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 153
Warning 13 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 154
Warning 14 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 157
Warning 15 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 158
Warning 16 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 159
Warning 17 warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 162
Warning 18 warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. c:\users\hari\documents\visual studio 2010\projects\dafsdsdfd aaaaaaaaaa\smtp.h 163
Error 19 error LNK2019: unresolved external symbol __imp__send@16 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 20 error LNK2019: unresolved external symbol __imp__recv@16 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 21 error LNK2019: unresolved external symbol __imp__connect@12 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 22 error LNK2019: unresolved external symbol __imp__htons@4 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 23 error LNK2019: unresolved external symbol __imp__socket@12 referenced in function "int __cdecl SendSmtpMail(struct SMTP_CLIENT *,struct SMTP_MAIL *)" (?SendSmtpMail@@YAHPAUSMTP_CLIENT@@PAUSMTP_MAIL@@@Z) c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 24 error LNK2019: unresolved external symbol __imp__WSACleanup@0 referenced in function _main c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 25 error LNK2019: unresolved external symbol __imp__gethostbyname@4 referenced in function _main c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 26 error LNK2019: unresolved external symbol __imp__WSAStartup@8 referenced in function _main c:\Users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\dafsdsdfd aaaaaaaaaa.obj
Error 27 error LNK1120: 8 unresolved externals c:\users\hari\documents\visual studio 2010\Projects\dafsdsdfd aaaaaaaaaa\Debug\dafsdsdfd aaaaaaaaaa.exe

[abzero]

Doesn't look like your linking to the Winsock.dll, you need to add it to your linker options. You also probably want to disable the warnings since it's in the smtp.h headers which you don't have access to.

[harkoslav]

Can you please explain me how can I link it.

[hetra]

Project>Properties>Linker>Input>Additional Dependencies

Type it in the Additional Dependencies bar.

(I haven't done much with the linker so I may be wrong).

[harkoslav]

thanks, I have got no errors now. But it's not working for me. How could I add username and password for mail from which I'm sending mail to other person.

[hetra]

You mean SMTP perspective or C++ perspective?

[harkoslav]

Yes SMTP perspective I guess. I would like to add it in this code.

http://forum.codecal...p-h-header.html