Authenticated SMTP

• Download SMTP.zip - 32.3 KB

Introduction

This code is a C++ class derived from the ATL class CSMTPConnection. It adds LOGIN authentication It also allows specifying a custom SMTP port.

Background

The base class is described in detail here.

SMTP negotiating is described here.

Using the Code

Create a Windows project in Visual Studio 2005 and make sure you add ATL support. Create a CAuthSMTPConnection variable and use the Connect method. CMimeMessage is already defined in the ATL libraries and the base class is already set to handle it.

Sample Code

CAuthSMTPConnection SMTP(587,"smtp.server.com","username","password");
if (SMTP.Connect())
{
	// Create the text email message
	CMimeMessage msg;
	msg.SetSubject(csTFTDHdr);
	msg.SetSender("me@somewhere.com");
	msg.SetSenderName("Me");
	msg.AddRecipient("you@somewhere.com");
	msg.AddRecipient("them@somewhere.com");
	msg.AddText("Use CAuthSMTPConnection to authenticate SMTP!");

	// Send the email message
	if (SMTP.SendMessage(msg))
		AfxMessageBox("Sent Mail");
	else
		AfxMessageBox("Mail not sent");
}
else
{
	AfxMessageBox("Can't connect to mail server");
}

History

• 11/10/09 - Article created
• 11/11/09 - Cleaned up some insecure code
• 04/24/12 - Added support for VS2008

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)