At 15:47 29.01.2003, 1LT John W. Holmes spoke out and said:
--------------------[snip]--------------------
>> are all your email duplicated?  if people are replying to a message you
>sent
>> you are probably getting one copy from them and one from the list.
>
>No, it's not that. I'm talking about just regular questions that are send
>only to the list. Hours later I will receive another copy of the message for
>some reason. Maybe it's my ISP.
--------------------[snip]-------------------- 

You should be able to tell by looking at the headers - if they have the
same message-ID, they've been duplicated somewhere; if they are different,
maybe they originate by a "reply to all" - in that case the message date
should be identical. If the sender's date is defferent, then go ahead and
jump on them ;-)

You me also get some clue by parsing the "Received" headers. MTAs usually
add something like "received for", which corresponds to the SMTP envelope
RCPT address, not to the message's MIME "To" or "Cc" entries.


-- 
   >O Ernest E. Vogelsinger 
   (\) ICQ #13394035 
    ^ http://www.vogelsinger.at/


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