Hi,

For certain folders attempting to ListMessages with 'sortOrder'='up' we get an 500 internal service error: "{"result":null,"error":{"code":"Server.ListMessagesFailed","message":"Error fetching message list.","detail":null}}"

However, attempting the same call with 'sortOrder'='down' we get the expected list of message ids.

We will include examples as a reply to this message.

Let us know if we can provide anymore information that to help track this down.

Thanks