Why is it that when I changed the default sending and receiving message limit to "no limit", I couldn't still send and receive mails with large attachments? Also, why is it that when I added an entry to the "Recepient Policies", it took a day before it finally reflects on my address book? My network is running in 1 tree and 1 forest only so I don't see any reason for the changes I made to take ages before taking effect. Please help me.