The Lua function 'VPOP3.SetSetting' sets a general setting forVPOP3

It takes two parameters:

1. The name of the setting. This can either by the 'Name' field of the 'Settings.Settings' database table or the internal setting name
2. The data to set (must be a string)

The function returns one value:

1. boolean - 'true' if the setting was set

A third optional boolean parameter is possible. If this is set to 'true', then the setting will be created even if it doesn't exist. If it is absent or set to 'false', then the setting will not be created if it does not already exist (and the function will return false)