package smtpd

import (
  "errors"
  "fmt"
)
// Error represents an Error reported in the SMTP session.
type Error struct {
	Code    int    // The integer error code
	Message string // The error message
}

// Error returns a string representation of the SMTP error
func (e Error) Error() string { 
  return fmt.Sprintf("%d %s", e.Code, e.Message) 
}

// ErrServerClosed is returned by the Server's Serve and ListenAndServe,
// methods after a call to Shutdown.
var ErrServerClosed = errors.New("smtp: Server closed")