Strange delays

[Christopher arnold]

It seems that messages end up in the following state for about 30 minutes
time.

FreeBSD-4.0-Release$ ./qmail/bin/qmail-qstat 
messages in queue: 5
messages in queue but not yet preprocessed: 5

But if i pull the trigger with:

#include "triggerpull.h"

void main() {
triggerpull();
}

The mail gets delivered right away.

What have i missed? Is this a bug or feature?

        /chris