I'm running Lion 10.7.3 with Mail.app 5.2. In Mail > Preferences > General There's a setting to change "Check for New Messages" with a pulldown for every 1 minute, every 5 mins, etc. Is there a way, possibly via terminal settings, to change this to check for new messages every two or three minutes, instead of just every minute or every five minutes? Every one minute is too frequent for my mail server and often shows a password error as the IP is temp blocked. Every 5 minutes seems a bit too long. Any help is appreciated, thanks.