Strange situation about len recipients

its a bug(?), when you equals if len(to) == s.srv.MaxRecipients? if recipient will be more than 100 like 101? 

`
if s.srv.MaxRecipients == 0 {
	s.srv.MaxRecipients = 100
}
if len(to) == s.srv.MaxRecipients {
	s.writef("452 4.5.3 Too many recipients")
} else {
`