ietf-nntp Section 4 - inactivity autologout timer duration

[David Riley]

Section 4 states:
            A NNTP server MAY have an inactivity autologout timer. Such a
            timer MUST be of at least three minutes duration.  The receipt
            of any command from the client during that interval SHOULD
            suffice to reset the autologout timer.  When the timer
            expires, the server should close the TCP connection without
            sending any response to the client.

Is there any particular reason that the timer duration MUST be at least
three minutes?  It seems like an unnecessary statement which limits the
configurability of servers.

-- 
David Riley
David.Riley at software.com - Software.com, Inc. (Vancouver, B.C.)