sendmail 8.12 and mailscanner

Julian Field mailscanner at
Sat Jul 20 13:11:14 IST 2002

At 06:35 20/07/2002, you wrote:
>On Thu, Jul 18, 2002 at 10:13:29AM +0100, Julian Field wrote:
> > >clientmqueue is used by the submission agent when it can not deliver a
> > >mail immediately, e.g. DNS timeouts and other temporary problems.  You
> > >have to run a separate queue runner to flush the mails from clientmqueue
> > >periodically.  A typical way to run it is:
> > >
> > >  /usr/sbin/sendmail -L sm-msp-queue -Ac -q20m
> > >
> > >As far as I know, this queue runner will send the mails to the sendmail
> > >daemon running on the local machine through SMTP.  So, you don't need to
> > >worry, your mails will end up in mailscanners incoming queue.  Just
> > >remember to run this queue runner if you have locally generated mails.
> >
> > Thanks for the info. So clientmqueue will only get used once a delivery
> > attempt has been made (and hence long after MailScanner has processed the
> > message).
>Sorry I wasn't clear enough.  The order is a bit wrong.
>For locally generated mail, the submission agent firs tries to send the
>mail to the local daemon through SMTP.  If it succeeds, the mail will go
>to  If it fails for a temporary error (e.g. DNS timeout in
>trying to canonicalize sender/recipient domain), the mail will be put in
>clientmqueue.  The clientmqueue queue runner will pickup the mail later
>and deliver it to the local daemon.  So the mail will end up in
> anyway.

Thanks for clearing that up. I understand now! :)
So the net result is that MailScanner should indeed still work just the way
it has in the past.
Julian Field                Teaching Systems Manager
jkf at         Dept. of Electronics & Computer Science
Tel. 023 8059 2817          University of Southampton
                             Southampton SO17 1BJ

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