I have tried to set-up my work account as both pop3 and imap. Both will manually fetch and push properly immediately following set-up. Eventually even a manual sync will fail. I hit manual sync this morning around 10am, the phone worked on it for a few seconds but returned no new messages. When I fired up Thunderbird on my laptop around 11 I had several messages waiting since 6am.
Sync every 15 minutes works for a while after a reboot but eventually stops working. I have nothing that stops the email app from running.
My OG Droid never had this issue. Am I missing something?