exchange 2010 / outlook 2007 autodiscover issues

Good day,

I am having some issues with autodiscover which are very likely due to a misconfiguration. I am unable to use the out of office assistant in Outlook 2007. When I test the autoconfiguration of outlook 2007 (by right-clicking the outlook icon by the clock on win7 while holding ctrl and then choosing test email autoconfig), it fails if I use email@domain.local, but works if I use

I have an internal A record in DNS pointing to the email server's LAN IP. I do not have an external DNS entry for autodiscover. I do not manage external DNS and have put in a request to add a DNS record for pointing to the 2010 exchange server's public IP. Not sure if that will matter here, but wanted to mention.

In IIS, default web site > autodiscover SSL settings are require SSL but ignore client is selected.

the autoconfig test shows the old 2003 server URL at for Availability Service, OOF, and unified messaging, but OAB shows the correct URL of Same thing under both Protocol: Exchange RPC and Protocol:Exchange HTTP.

Another thing is that in 2010 EMC, all default websites are set to and works fine, as well as active sync. Further, the out of office assistant works in OWA. However, in IIS, default website are showing under redirect, but they are all grayed out.

Any ideas how to clean this up and get out of office working properly, including having IIS show webmail instead of mail, are greatly appreciated.
king daddyAsked:
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This should point you in the right direction.
I think i saw this problem once, which had the following resolution. (don't shoot me if this is not the case at your side)

This had to do with a missing atrribute of the user.
I think it was the mailnickname that was empty.
It's worth a try at least.
king daddyAuthor Commented:
did this and out of office is working and autoconfig test in outlook 2007 is successful (shows webmail / exchange 2010 server instead of mail/2003 server.

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king daddyAuthor Commented:
I chose my answer as the best solution since the link is where I found the exact solution which resolved my issue. I awarded points to those which replied since I did use the exchange analyzer and also for the other user simply for trying to help out.
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