I have my phone set to download 7 days worth of e-mail through my Activesync/Hotmail (well, really a Windows Live domain) account. No matter what I try it will only display mail from the past 24 hours.

When I manually refresh the mailbox I sometimes see that the phone is downloading x of y messages (for instance, 18 of 23) but then the mailbox only shows around 8 messages.

Any ideas what is happening to the other messages?