Check SMTP authentication in C #
<p>Tell me how to check the authorization a user's mail via sockets?</p>

<p>Or if there is another way to check for authorization. Option to send a test message (to the library System.Net) to SMTP mail server has already tried, but it is not very suitable.</p>

<h3>More info:</h3>

<p>I need to after the user enters login and password, I could check whether the right account or not. And it does not send test messages just check the account exists or not that would further the program could continue to work with the user or not </p>
