I have a setup at my desk where I connect my computer to a an RJ45 switch that switches between two networks.

One network is the corporate network, which is maintained by my company's IT, and the other is my own private network where I do testing (the two networks have to be separated). The corporate network hosts the exchange server where I get e-mail.

When I switch from the private network to the corporate network, I expect Outlook to re-connect to the exchange server. However, I have found that sometimes when I come back, Outlook take an extremely long time to re-connect. Send/Receive will give me back the error 'The server is not available' (0x8004011D). It will sit there for 10 minutes to a few hours before it finally re-connects. The only other option is to reboot my computer, which is a huge pain for me since I run multiple VMs on it.

This usually happens when I'm connected to the private network for a significant amount of time, so I'm thinking it's because Outlook has cached the network status.

Is there a way to force Outlook to do a 'hard' re-connect to the exchange server?

I'm using Windows XP SP 3 with Outlook 2007.