> I'm unsure of the mechanism here. Who is keeping track of
> read/unread messages in POP3? Is this an Outlook problem, as I
> suspect, or is it an IMail problem? Where Microsoft is involved,
> I'm never quick to blame the other guys ;-)
The client is responsible for keeping track of which messages it has downloaded -- but
the server is responsible for identifying them.
When the client connects, it usually issues a UIDL command, to which the POP3 server
responds with a list of all E-mails and their IDs. The mail client then compares the
IDs to determine which are new.
If Outlook "forgets" IDs that it has already downloaded, it will re-download the
E-mails, causing this problem. OTOH, if IMail were to re-assign IDs (which I think
would be difficult), the same problem would occur. So, like most client/server
problems, it isn't easy to determine who is at fault.
-Scott
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