Motorola Droid

I am using the Droid with my Windows Live POP 3 account, and I am also using TouchDown for my work Exchange account. On both of these, I have noticed that when an email gets deleted from the server, it also gets deleted from my Droid. Is there any way to change this? This is especially frustrating for my Live account, because I use Outlook at home for email and I have that set up so that it removes emails from the server when it pulls into Outlook. But when it does this, it also deletes them from my Droid. My Blackberry didn't do this - once an email was on the device, it stayed there until I deleted it from the device specifically. I would prefer to have it this way because I liked having my phone as almost like a mirror image of what I had...
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