On 19 Dec 97 at 9:26, Dave Barr wrote:
> In message <s49a7358.043@smtp.unp.ac.za>,
> Martin Voges writes:
> >Duplicate mailings can be caused by sendmail initiating another instance
> >of 'clearing the mail queue' before the previous one is done.
>
> That's the typical scenario, but it's one of those "not
> supposed to happen" situations. Sendmail locks each queue
> file, preventing other sendmails from attempting to deliver
> from it while it's working on it
I seem to recall that if you are not checkpointing your queue
and if sendmail fails to completely transmit a multi-sddressed
message, then sendmail reprocesses the entire receipient list,
even those receipients that got out successfully the first go
round. You can force sendmail to discard susccessfully
delivered addresses every 'n' receipients by setting the
checkpoint option in sendmail.cf to 'n' . The lower the
checkpoint number is the slower the queue processing time
becomes. However, 10 seems to be a good compromise on our
system. Try this and see if it helps.
Regards,
Jim
James B. Byrne Harte & Lyne Limited
vox: +1 905 561 1241 byrnejb@harte-lyne.ca
fax: +1 905 561 0757 www.harte-lyne.ca
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