Microsoft KB Archive/321119

= You Cannot Download Mail from a Server Without UIDL Support =

Article ID: 321119

Article Last Modified on 4/25/2002

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APPLIES TO


 * Microsoft Pocket PC 2002 Software Standard Edition

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This article was previously published under Q321119



SYMPTOMS
When you try to receive e-mail messages from some servers by using Post Office Protocol (POP3), you may receive the following error message:

Messages could not be downloaded as your POP3 server does not provide a unique identifier for each message.



CAUSE
This message is expected for POP3 servers that do not support unique-ID listing (UIDL).



RESOLUTION
Most POP3 servers support UIDL. In some cases, this must be configured on the server.



STATUS
This behavior is by design.



MORE INFORMATION
The UIDL of a message is an arbitrary server-determined string that uniquely identifies a message in a maildrop. The UIDL persists across sessions. The UIDL is typically used by e-mail programs to uniquely identify messages between synchronization sessions.

