example_5.cpp

LINUX下发送邮件的库,测试很好用,有各种发送测试的例子

#include <libsmtp++/inetsocket.h>
#include <libsmtp++/smtp.h>
#include <string>

// This example shows how to use ssl encryption with
// libsmtp++ without verifying the certificate of
// the smtp server.
//
// compile with:
// g++ -lsmtp++ example_5.cpp

// the email message that is to be sent.
string msg =
"To: [e-mail]\n"
"Subject: test\n"
"\n"
"\n"
"test\n";


main()
{
	// First put all informations together that we might need.
	string domain     = "epost.de";
	string from       = "[e-mail]";
	string host       = "mail.epost.de";
	unsigned int port = 25;

	// Then group all recipients in a vector.
	vector<string> rcpts;
	rcpts.push_back("[e-mail]");
	rcpts.push_back("[e-mail]");

	// Build the SMTP object.
	SMTP smtp
			(
			 	domain,
				from,
				host,
				port
			);

	// Let's tell libsmtp++ that we want to use ssl
	// encryption. You need to specify which type
	// of ssl implementation you would use. If the
	// smtp server listens on port 25 it will probably
	// be SMTP::STARTTLS, if the smtp server listens
	// on port 465 it will most probably be SMTP::SMTPS.
	//
	// The second parameter tells libsmtp++ if the certificate
	// that the smtp server provides for us will be verified
	// or not. If the certificate will not be verified the
	// connection is still be encrypted but there is no way
	// to verify the identity of the server. Possible
	// Values:
	// SSLSocket::VERIFY_NONE
	// SSLSocket::VERIFY_PEER
	smtp.setSSLOpts
			(
			 	SMTP::STARTTLS,
				SSLSocket::VERIFY_NONE
			);

	// Add the message "msg" and the recpients "rcpts" to
	// the SMTP object.
	// You can call this method multiple times to add more than
	// one message that should be sent.
	smtp.addMessage(msg, rcpts);

	try
	{
		// Finally send the message. This call should everytime
		// be embedded in a try catch block as any error that
		// occurs while sending the message will result in 
		// an exception that will be thrown.
		// All Exceptions thrown by libsmtp++ are inheritated from
		// the base class Exception.
		smtp.sendMessage();
	}
	catch(Exception e)
	{
		// Exception::what() will provide an informal message about
		// the error that occured.
		cout << e.what() << endl;
		exit(1);
	}

	cout << "The message was successfully sent." << endl;
	exit(0);
}