Hi

Well, I have tried everything and came out with the conclusion TB is
the culprit. I have tested the mailbox sharing with my own mail server
and get the same erratic behaviour, i.e. multiple downloads of all the
messages in the mailbox. I can't reproduce the problem with another
mail client.

This is clearly a bug to my eyes! What can I do?

Thanks in advance,
DC

-- 

 David Cantatore                            mailto:david@;cantatore.org


Friday, October 18, 2002, 5:59:47 PM, you wrote:

Peter Palmreuther> Hi David,

Peter Palmreuther> On Fri, 18 Oct 2002 17:04:17 +0200
Peter Palmreuther> David Cantatore <[EMAIL PROTECTED]> wrote:

>>> A few questions.  Is everyone of them using TB? And if so, do all
>>> copies of TB show the same behaviour? In the latter case you could
>>> try to ask the ISP about changes in the server.

>> They all use TB and the ISP maintains the problem isn't on their side
>> (which I believe). 

Peter Palmreuther> Why do you belive that?
Peter Palmreuther> The reason why I'm asking is: the 'leave messages on server and do 
not
Peter Palmreuther> download them a second time' is such a simple function there can't 
be
Peter Palmreuther> mayn things wrong. I'll try to explain it in short words:

Peter Palmreuther> 1.) TB! connects to the Mail server and asks for a list of so called
Peter Palmreuther>     'UID's. The POP3-command for this purpose is 'UIDL' (Unique ID
Peter Palmreuther>     List).
Peter Palmreuther> 2.) Assuming TB! hasn't downloaded any message before it now 
fetches all
Peter Palmreuther>     messages and writes the UIDs of messages fetched to a local 
file.
Peter Palmreuther> 3.) Next time TB! connects it fetches the UIDs again, compares them 
with
Peter Palmreuther>     the local list and fetches only the messages not in the local
Peter Palmreuther>     UID-list.

Peter Palmreuther> The UID is calculated and generated by the mail server, TB! has in 
no
Peter Palmreuther> way any influence on this UID generation process. Therefore if such 
a
Peter Palmreuther> scenario, as you describe, _suddenly_ happens _AND_ the The Bat! 
version
Peter Palmreuther> has _not_ changed there are two possibilities:

Peter Palmreuther> 1.) TB! suddenly is not capable to handle the UID file correctly. 
Have a
Peter Palmreuther> look at the account dir for a file called: 'ACCOUNT.M_R'. This file
Peter Palmreuther> contains the UIDs. Is it empty? Seems TB! is the culprit. Not? 
What's
Peter Palmreuther> it's last modification time? Long ago? Maybe TB! is the culprit. It 
was
Peter Palmreuther> just modified lately? Chances are high the server does something
Peter Palmreuther> unusual.

Peter Palmreuther> 2.) The server has changed, maybe a minor upgrade of POP3 daemon 
and now
Peter Palmreuther>     calculates the UIDs on a basis that does not provide the same
Peter Palmreuther>     result on every run. Maybe the UID generator uses file 
modification
Peter Palmreuther>     time of mbox file / maildir and that time might change as the 
mail
Peter Palmreuther>     box is touched every time you fetch your mail.
Peter Palmreuther>     This can proven _only_ by doing some low level stuff, namely: 
doing
Peter Palmreuther>     multiple telnet sessions and sending POP3 commands manually to
Peter Palmreuther>     compare the results the server gives on one picky message.

Peter Palmreuther> I for myselft wouldn't trust the ISP this fast only because he 
tells the
Peter Palmreuther> problem ain't on their side ... Hey, THIS is the fastest way for 
him to
Peter Palmreuther> get rid of that problem: telling it's you and let the work be done 
by
Peter Palmreuther> you or live with the problem.

Peter Palmreuther> If _nothing_ changed on TB! side why should it 'out of a sudden' 
start
Peter Palmreuther> behaving incorrectly? On _four independent_ machines, everywhere 
with
Peter Palmreuther> the same symptoms. You'd have to misconfigure _all four system_ the
Peter Palmreuther> _same way_ ... quite hard to believe :-)


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