Program POPWatch runs on background of Mercury/32 and blocks "bad"
connections to MercuryP (Mercury POP3 server). It should mitigate brute force
attacks to POP3 server.
So blocked is such address, from which more than "AuthFailures" connections
was done AND delay between them was shorter than "ClearTime" minutes
AND in no one connection was done successfull authentication.
So such address, from which something repeatedly tries to login with