[nos-bbs] Old BIDs

[Jack Eifer]

On Jnos:

'Bulletin holdold <n days>'


> On Feb 9, 2017, at 12:08 AM, Gustavo Ponza <g.ponza at tin.it> wrote:
> 
> 
> 
>> On 02/08/2017 05:42 PM, Michael Fox - N6MEF wrote:
>> I was contacted yesterday by an FBB sysop because a bunch of old (> 1 year)
>> WP bulletins have been flooding him.  The source of the old bulletins is
>> probably someone restoring an old backup.
>> 
>> 
>> 
>> But the issue is that they're being forwarded around the net over RF links.
>> According to the FBB sysop, FBB immediately expires them upon receipt.  So
>> it does not forward these old bulletins to others.  But, evidently, other
>> BBSs do not do that.
>> 
>> 
>> 
>> My understanding of JNOS is that expiry occurs as an "at" job.  I currently
>> run it twice a day.  But even if it ran every hour, it still wouldn't stop
>> such forwarding, since I might receive an old bulletin one minute and then
>> connect to many other BBSs before the next hourly expiry function.
>> 
>> 
>> 
>> One way to stop it would be to keep longer history.  I currently have JNOS
>> set to keep 6 months of history.  But even a whole year of history wouldn't
>> have stopped the current case because the bulletins were > 1 year old.
>> 
>> 
>> 
>> Back in the 80s, CPU power and disk speed were not the same as today.  With
>> the capabilities of today's machines, I'm wondering if it makes sense for
>> JNOS to perform expiry on the fly.  That is, it would use the current
>> rewrite process to determine the destination mailbox, and then look up the
>> expiry interval for that mailbox, and, if the message is expired, then not
>> save it to the mailbox.
>> 
>> 
>> 
>> Perhaps there is another way?
>> 
>> 
>> 
>> Michael
>> 
>> N6MEF
> 
> The two basic methods I know are the 'epurmess' method
> implemented by WA7MBL/F6FBB and similar oriented PBBSs
> and the one perhaps more efficient/sophisticated
> 'purge/reorg' method adopted by the obcm and other
> German PBBSs.
> 
> -- 
> 
> 73 and ciao, gus i0ojj
> A proud member of linux team
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