Free/Busy lookup cannot be retrieved

Our company migrated our mail servers to exchange 2007 in December. Our corporate site was running Exchange 2000 while our remote site was running exchange 2003. The migration was fine and worked for close to 2 months without any issues.

Recently, we found free/busy lookups would not work on outlook 2007 clients but all others are working just fine. While using owa, we are able to see the free/busy info. We've gone through iis and can't seem to find anything.

We did install a signed cert on the default website. Again, all outlook clients prior to 2007 are able to grab the free/busy info from the public folders but 2007 can't grab them from iis.

Any help would be greatly appreciated.


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pphmAuthor Commented:
Turns out the issue was related to iis changes that were inherited to the virtual directories. Basic Authentication was set on the virtual directories which was causing 403 errors that we weren't able to see right away.

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