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Subject:
Re: SCIFAQ errors
From:
Eric Thomas <[log in to unmask]>
Reply To:
Forum on LISTSERV release 1.7
Date:
Tue, 3 Aug 1993 20:35:27 +0200
Content-Type:
text/plain
Parts/Attachments:
text/plain (30 lines)
On Tue, 3 Aug 1993  10:56:24 -0800 "Michael C. Berch" <[log in to unmask]>
said:
 
>1.  Make  it possible  for  the  list  owner  to disable  the  duplicate
>suppression  code. (Is  there  some reason  this can't  be  done?) In  a
>moderated newsgroup/list, all postings will some from the same origin (a
>moderator or gateway site), so mail loops are not likely.
 
Mail loops are not the problem. The problem is that mailers sometimes get
crazy and send 200 copies of the  same message to the list. And there are
time window problems that make it  possible for a message to be delivered
twice if the line fails just at the wrong time, too. You can disable this
code, but don't complain if some day the 500 people on your list each get
200 copies of the same message.
 
>2. Have  the duplicate suppression code  use a settable timeout  -- mail
>loops tend to occur  within a day or two if at all,  but FAQs are rarely
>posted even  as often  as weekly. Tuning  this parameter  should provide
>protection against duplicates while allowing unchanged periodic postings
>like FAQs.
 
You can control the amount  of messages the duplicate checker recognizes.
By default, this is  50. But the best solution seems to  be adding a time
stamp to the  FAQ file automatically. This will be  useful to subscribers
in countries where everything has to go through a 9.6k link because there
is no money  for more bandwidth, as larger messages  (such as FAQ's) tend
to be queued after small ones.
 
  Eric

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