I am totally baffled, I have Outlook 2007 on my windows 7 computer and since I bought a Mac and also take email on that my Outlook downloads hundreds of emails over and over again. I have unpicked "Leave messages on the server" in Outlook accounts. I have uninstalled MS Office and re installed it. I have to leave messages on the server on my Mac or they all disappear from Mac Mail.
Wits end any help please.
Wool well my ISP is BT recently become Yahoo, the reason I want the same emails on windows is because it is a laptop and I sometimes use it away from home.
I will look and see if I can change it to IMAP