[DJChew]

Have to tried a new Outlook/MAPI profile?

They often become corrupt. I have taked to Microsoft about it and they have never beeen able to determine why a new one would need to be created, but it fixes a lot of issues.

[SQFreak]

Try upgrading to DM4.3. I use DM4.3 with Outlook 2007 on an Exchange 2007 server with XP Pro SP2 and a BB Pearl 8130 with no problems.