Lisa Michael describes the use of SMTP Authentication (AUTH), settings associated with it and how to lock it down in your environment. More information from this Open Mic Webcast ("SMTP Best Practices"), including the presentation, recorded audio and full video is available through the Webcast document for the event: http://www.ibm.com/support/docview.wss?uid=swg27046214
This is a video that was created for a CISC 250 Project and it explains the SMTP Protocol that occurs during the email process.
Step by step discussion of sending mail using telnet. Provides useful information for troubleshooting SMTP related issues. This enable us to understand that what happens when we hit Send button in e-mail client. To use telnet command in Windows 7, Window Vista, Windows Server 2008 and Windows Server 2012, Telnet Client feature needs to be installed. Please refer this link to do so: http://gopalthorve.com/enable-telnet-client-on-windows-7-and-windows-server-2008/
SMTP Authentication, often abbreviated SMTP AUTH, is an extension of the Simple Mail Transfer Protocol whereby an SMTP client may log in using an authentication mechanism chosen among those supported by the SMTP server. The authentication extension is mandatory for submission servers. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
http://www.imacmailer.com This video shows how a standard SMTP server works. It is a detailed video showing what happens when you hit send button on your mail client.