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Authenticated SMTP

, 24 Apr 2012
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C++ class to authenticate an SMTP server connection

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

License

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

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About the Author

Andy Bantly
Founder
United States United States
Working as a software developer since 1989. Started out with Basic, FORTRAN and JCL, moved into Visual Basic 1.0, C, then C++, and now I work mainly in C++ using MFC, Win32, and ATL/COM. I use Microsoft Products only because that is what gives me gainful employment. Through work, I have a lot of experience with HTML, JavaScript, XSL transformations, the XMLHTTP object, PHP 4.x, and simple COM object integrations.
 
I've worked for the University of Oklahoma in the school of meteorology (Go SOONERS!), consulting, and now as a Senior Software Engineer. These things keep my lights on and electricity going. My dream job is to own a bowling alley and rub elbows with pro-bowlers! I'm also an avid pedicab driver and have my own cab. I like the hustle of picking up people in downtown and biking them to their destination.
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Comments and Discussions

 
GeneralMy vote of 5 PinmvpMichael Haephrati3-Mar-13 5:34 
GeneralMy vote of 5 Pinmembermaplewang24-Apr-12 19:44 
GeneralMy vote of 1 PinmemberxComaWhitex24-Apr-12 4:23 
GeneralRe: My vote of 1 PinmemberAndy Bantly25-Apr-12 2:24 
GeneralRe: My vote of 1 PinmemberxComaWhitex25-Apr-12 8:42 
Question[My vote of 1] Not an article PinmvpRichard MacCutchan24-Apr-12 3:14 
AnswerRe: [My vote of 1] Not an article PinmemberAndy Bantly24-Apr-12 3:38 
QuestionNow support VS2008 PinmemberAndy Bantly24-Apr-12 2:12 
AnswerRe: Now support VS2008 PinprofessionalCanny Brisk24-Aug-13 21:28 
Questionatlsmtpconnection.h can't get included? PinmemberJoan Murt23-Apr-12 21:03 
AnswerRe: atlsmtpconnection.h can't get included? PinmemberAndy Bantly24-Apr-12 1:48 
GeneralMy vote of 5 Pinmembermaplewang14-Mar-12 4:02 
GeneralMy vote of 1 PinmemberDitecShelby31-May-11 8:04 
GeneralMy Vote is 4 PinmemberAli Sayed12-Nov-09 7:00 
GeneralMy vote of 1 PinmemberJim Crafton11-Nov-09 5:49 
GeneralRe: My vote of 1 PinmemberAndy Bantly11-Nov-09 6:31 

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