On 23 Feb 2000 michael@??? wrote:
> Hmm. I did not see any exim processes with a PPID of 1, but if both
> terminate quickly, I don't have to. Oh well.
Exhibit I:
----------
exim <address>
<message>
.
returns very quickly; the delivery process it forks carries on running.
Make <address> refer to a slow SMTP link and you'll see it.
Exhibit II:
-----------
Daemon forks a process to accept an incoming SMTP call. Once it has
received a message, it forks a delivery process. If the SMTP call then
ends, the delivery process continues to run.
Exhibit III:
------------
A delivery process delivers to a remote host; it passes the SMTP channel
to a new process to deliver another message that is waiting for that
host. If it then finishes first, the new process continues to run.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
