Outlook Web Access was VERY slow to log into. Once you got authenticated, it was ok, however it took literally 3 minutes to get logged in. I was really surprised at how long it took to load up. However, I just did some checking in my firewall logs, and I noticed several connection attempts from the clients logging into OWA...however, the connection attempts were for port 389 (LDAP). This port is disabled on my firewall. So, I jumped on my firewall, and enabled LDAP to the outside world. OWA just SCREAMS now...it's incredibly fast to log into now...it takes about 10 seconds as opposed to the 3 minutes before. So, that leads to 2 questions. 1. Why is OWA attempting to use LDAP. Is there a way to disable this so LDAP doesn't have to be opened to the real world in order for OWA to allow users to log in at a reasonable speed. 2. What's the harm in leaving LDAP open? Are there attacks that have been aimed at the LDAP services for Win2k/Exchange? I'd prefer to not have to open the LDAP port...the more holes that are opened in the security, the more likely someone will figure out a way in... Suggestions (and/or Microsoft KB articles) would be appreciated Thanks, Tim