default maillogs busy with postfix/postdrop

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

A NetBSD 4.0 test system I use continually logs like:

Sep 13 12:05:26 new-host-3 postfix/postdrop[8603]: warning: 
mail_queue_enter: create file maildrop/321477.8603: No such file or 
directory

Over 1 million entries in my rotated mail logs.

I didn't purposely configure this logging. (And I also purposely didn't 
enable postfix or any mailer.)

NetBSD 4.0 out of the box should not log continually like this.

Instead of me doing manual post configuration, what can next NetBSD 4.x 
offer to fix this by default?

If I caused this myself or this is already fixed, please let me know.