I connect to exchange throught the HTTP proxy,now thatwe upgraded to SP2, connections take forever if they connect at all. When connected they are dropped constantly and again take forever to reconnect. In the meantime outlook does not respond and often times times out and wants to work offline.Any suggestions/solutions?Win 2003 x64 Lee

Hi,What's the version of the Exchange server?Please try the online testing tool to diagnose this issue:https://www.testexchangeconnectivity.com/Default.aspxThanksAllen