This type of error indicates that your settings in your email software are not correct, and you are trying to connect using a Secured SSL connection, when you should be downloading via a normal connection.
To solve this, you need to go into your email account settings, and click on the advanced tab. Make sure that for the 'incoming (pop3) connection', where it says 'This server required an SSL-secured connection(SSL)' , that it is unticked, as shown in the image below.
You can get to this box in most versions of outlook by going to Tools > EMail Accounts... . Then select the email account, click the 'more settings...' button, then click on the 'Advanced Tab'. You may need to refer to your email documentation for more information if you can't find this area in your email software.
Another reason you could be getting an error is if your have SPA Secure Password Authentication enabled. Please make sure that SPA is unticked, as shown in the image below.
Other reasons for similar errors, include your internet security software (such as firewall or anti virus software) that is taking over control of those settings. PLease try temporarily disabling them to test your account. Please refer to your internet security vendor or system administrator, if these steps above don't solve the error. If you are still having trouble, we recommend deleting the account in Outlook and resetting it up again. Also try setting up your email account on another computer, on another network, as it could be a problem with other software settings on your computer, that possibly need a computer technician to fix.