pop3

type Connection interface {
	Addr() net.Addr
}

type POP3Error string

type Server struct {
	Addr         string        // TCP address to listen on, ":2525" if empty
	Hostname     string        // optional Hostname to announce; "" to use system hostname
	ReadTimeout  time.Duration // optional read timeout
	WriteTimeout time.Duration // optional write timeout

	TLSconfig *tls.Config // tls config

	ServerConfig *config.Config

	// OnNewConnection, if non-nil, is called on new connections.
	// If it returns non-nil, the connection is closed.
	OnNewConnection func(c Connection) error
}