What is a Socket Error 10061?

The attempt to connect was forcefully rejected. This means that the computer which VPOP3 was trying to connect to (probably at your ISP) refused the connection from the computer running VPOP3. This can either mean that the ISP server you specified was not running a mail service on the appropriate 'Port', that your ISP is having problems with their servers, or that your ISP's mail servers are too busy to accept new connections. It can also happen if a firewall (software or hardware) is blocking the connection attempt.