I have an Exchange 2007 server (mailbox) and another one (client access and hub transport), the problem is that it taked too much time to send emails outside the org, for example to yahoo or hotmail. The leased line is 1mbps. in the queue I just see some as active all the time (just 3MB emails) and other are showing retry 421 4.4.2 Connection dropped. for instance i sent an email (3MB) to gmail and it took 7 hours to receive! any idea??