I am launching a deployment of exchange 2003. I've been testing the web access, and whenever a messege gets posted to a mailbox and is downloaded by my computer, the next message that comes in to my mailbox is the only one in the inbox, but they are all on my computer. Making folders and putting email in them works and syncs well, but I've got to figure out this issue. Is there a setting somewhere that I'm missing?
It sounds like your client is configured to Download messages from server. For example, In Outlook, if you go to the account properties, and look under the advanced tab, there is a "Leave messages on server" by default this is off, so your messages will be deleted every time you check your mail. check the box and your messages will stay on the server.
Actually I figured out the problem. I couldn't find anything in my outlook 2003 that said delete or leave mail on the server... but I did find out that the default delivery location was my "personal folders" inbox. Once mail was delivered there, it was no longer in any exchange synced mail boxes and therefore told the server that the message was deleted. I left cached mode on, changed the default delivery to my exchange mailbox, and all is well.