Message-Id does not appear in bounce messages

[Alexey Rodriguez Yakushev]

        Hello, i have a small problem, when qmail sends a bounce message,
it does not put a Message-Id entry in the header. At the begining i though
it was normal but i saw that sendmail bounces do get that entry in the
header. Maybe it is a misconfiguration, i really don't know.
        Thanks for your help.
                                Alexey