I have alreay have a similar problem but with another mail server (ModusMail).

It's not exactly the same problem and I'm not sure if that will help you.

The user start downloading the email and the connection reset so the client have to redownload from the start...  The email server only note the downloaded email a the end, so if the connection crash before the end, the server consider no message as "read".
But the message are already in the user client, so they received it in loop. 

In my case, the problem was some badly formated email (empty one with strange message-id).  I have create a perl script to filter those emails.


Francois Rousseau







2006/9/28, Steve Ingraham <[EMAIL PROTECTED]>:
Mark Adams wrote:
What is your exchange server hosting? pop3? I have noted problems before
with clients recieving duplicate emails when connections timeout and the
server does not know how far the client application has gone through
the download of the mailbox - causing it to start downloading again. Are
any of the clients remote from the server? (this is where i noted the
problem most, notably on mobile internet devices especially on high
speed trains etc..)


All clients are networked desktop machines.  There are no remote
connections.

Steve Ingraham

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