Error 10053 means that an established connection has been dropped.
There are three descriptions of this error message we know about, but the descriptions are given by Windows, so they may vary depending on your version of Windows:
In the first of these, the 'software in your host machine' that is referred to is actually 'Winsock' - the TCP/IP component of Windows, not VPOP3. The 'protocol error' referred to in the second text is the TCP protocol, not POP3 or SMTP, etc protocol.
10053 errors are actually quite rare usually, but there are a couple of cases we know of which can cause them: