On Fri, 25 Jul 2003 13:12:01 +0100, Jonathan de Boyne Pollard wrote:

> jj> [...] when I do a qmailctl stat /service/qmail-send alternates jj>
> between 0 and 1 second up.
>
> <URL:http://homepages.tesco.net/~J.deBoynePollard/FGA/daemontools-service-not-staying-up.html>

Have you checked to see if anything else is listening in port 25?
LWQ explains how to do this.
As I recall, I had this problem on my most recent qmail install on debian.
It was because Exim was still installed and had port 25 open. All was ok
after I uninstalled Exim.