Base line: It is dependent on your own configuration. But if IANA build a server these days, they could be able to acquire messages you tried to send 3 days in the past.??? ???? ??? ? ????? ? ? ?? ??? ??? ????. ??, ??? ??? ??? ???? ?? ?????. ??? ????? ??? ??? ? ???, ??? ??? ??? ? ?? ?????. ?? ??? ????? ????, '???'??? ??? ?????, ???? ??? ??? ?? ????