Step-by-step instructions on how to set up your GreenNet email account in MS Outlook 2007, 2010, or 2013. These instructions also may work for Outlook 2016, but from summer of 2018 onwards you may also want to try here for 'wizard' instructions for Outlook 2019, Outlook 2016 and Outlook for Office 365.
How do I set up Outlook 2007 or later to check and send email?
Error 0×800ccc0f “Your Server Has Unexpectedly Terminated the Connection” Error Message When You Send an SMTP-Based E-mail Message
This problem can arise seemingly ‘out of the blue’. One day everything is fine, the next Microsoft Outlook complains of error 0×800ccc0f when trying to send email.
It comes down to Microsoft products conflicting with Microsoft products, for example, MS Window Firewall blocking MS Outlook. See if one of the scenarios below applies to you and follow the steps to solve the problem.