Pierre Fortin <[EMAIL PROTECTED]> wrote:
> I have analyzed just over 250 messages from Cooker and Expert lists.  Of those,
> there were 20 duplicated and 3 triplicated messages.

I'm impressed!  I quit after 2 or 4  ;-)

> From my short sampling, these are the causes of message replication I came up
> with...

Did you happen to attach a count to each of these causes?  That might be very
enlightening.

> CAUSE 1:  "user 500"@yavin.mandrax.org:  

I am of the opinion that user 500 is the 'expert list' expander/forwarder/whatever_
you_want_to_call_it.

> CAUSE 2a:  sender is using M$ Outlook Express configured to send an
> "Envelope-To:" header. ...
> 
> CAUSE 2b:  sender is using "Internet Mail Service (5.5.2650.21)" with a
> "Reply-To:" header.  See cause 2a for solution.

But aren't these just triggers to the problem in user 500?  Unless I've
missed something, it seems that the right solution is to fix whatever
user 500 is doing...

> CAUSE 3a:  sending to more than one addressee. 
>     Examples:
>       To: [EMAIL PROTECTED], <self>, [EMAIL PROTECTED]
>       To: [EMAIL PROTECTED], <self>, [EMAIL PROTECTED]

So expert@mandrax == [EMAIL PROTECTED], eh?  Wow, learn something
new every day ;-)   Does the '<self>' entry seem to have anything to do
with it?

> CAUSE 3b:  sending to both "To:" and "Cc:"
> CAUSE 3c:  sending with BCC: which is not detectable from the messages we get.

Actually, I have another theory.

Consider the following:

1 - Someone (the mythical 'someone'!) recently commented that re-mailings
seem to happen more when the weather gets bad.

2 - I have set up a teergrube on my home machine (the expert list does
not go there, though), and when I send to my home machine from my laptop
(which runs linux - I think its mandrake 7.01), the email is received
just fine, but the sending side sees the receiving side close early
(or so IT thinks!), so it RE-QUEUES the email!  A little while later,
it retries, succeeds, but thinks it did not, and RE-QUEUES it again!

Perhaps, in bad weather, the number of errors increases and we start
getting disconnects AFTER the email has actually been queued on the
remote machine, but the list sender thinks not.

Just a wild stab in the dark (OUCH!).

Finally - I'd be willing to set up a userid (on my home machine,
so teergrube may cause us problems, maybe not) where people could
send all duplicates to for me or 'us' (hoping I get volunteers! ;-)
to peruse, if all the other guesses fail and we need more info.
(like, to see if its truly random, or if only the same messages
get duplicated, etc.  And we'd probably want just a few folks to
forward ALL their messages they get from the list.  If anyone wants
to work with me on this - assuming the problem is not found at
the user 500 point ;-) - email me and we'll start talking...)
(eek, another mailing list! ;-)

(yikes, I may have to buy a new hard drive to hold it all!, and I'm sure
my 44k dialin will get overloaded - oh, well, its all for the cause ;-)
(and I hope we won't need it for TOO long, also!)

rusty


Rusty Carruth          Email:     [EMAIL PROTECTED] or [EMAIL PROTECTED]
Voice: (480) 345-3621  SnailMail: Schlumberger ATE
FAX:   (480) 345-8793             7855 S. River Parkway, Suite 116
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