Outlook Scheduling Assistant not seeing free/busy consistently

Question

I have Exchange clusters located in 2 different states conencted by a DS3. When I am scheduling a meeting requiring attendees from both locations, I cannot always see free/busy times for users at the remote location. It's very inconsistent and will even switch between the remote users if I let the scheduling assistant sit and refresh.

Is there a replication issue, or does anyone have any other ideas?

Thanks!!

Solution

One thing that may help is this article from Microsoft: http://technet.microsoft.com/en-us/library/bb397225.aspx

Sometimes trouble with autodiscover can illuminate problems with free/busy. Though the inconsistent nature of your problem suggests a timeout of some kind. It's probably a good idea to dig through the event-logs on your Hub/CA servers and see if there is anything diagnostic there.

Comments

[Jes]

Perfection! Found the connection issue, which led me to a service down on one of the servers. Thanks!!

[Qwerty]

This answer started the search for a solution for me and it appears to be working now. For all future visitors: I ended up adding an internal SSL rule in ISA and that seems to have made it work. I also ended up at this page: shudnow.net/2007/07/15/… it is full of detailed info about configuring Exchange 2007 with ISA to support Autodiscovery.