Please help! Email Problem

[tal3939]

I have had the phone since 4-1-08. No problems with email at all. Now I am getting an error message saying " Messages cannot be downloaded to your mobile device" I have had this with the ppc6700 and the treo 700wx in the past but I was able to resolve it. I have deleted the account and reinstalled it twice. Still the same thing. My other accounts work just fine but 2 of them thru cox.net have this message with every send and receive. Both of these had worked perfect for two months before last night. It started with me emailing a couple pictures.

Thanks for any help