Hi,

We have Exchange 2007 running in Co-Existence with 2013 and have run hybrid config wizard.

On prem 2013 users can see free/busy for 2007 and 365 users. 

365 users can see on prem 2007 and 2013 users.

On prem 2007 users can see free busy for On prem 2013 users, but not for Office 365 users.

We have checked the Free/Busy Trouble-shooter here http://support.microsoft.com/kb/2555008

and based on our answers we checked to see that the Proxyurl on AvailabilityAddressSpace matches the InternalURL on the 2013 Web Service and it does not. Our results are as follows.

Proxyurl : https://mail.contoso.com/ews/exchange.asmx

InternalUrls

EXCH2007CAS : https://legacy.contoso.com/ews/exchange.asmx

EXCH2013CAS : https://mail.contoso.com/ews/exchange.asmx

This would suggest an issue as the kb says to make sure they match, however the Note on the Article at the end says

"The internal url of the Exchange 2010/2013 CAS web service virtual directory should differ from Exchange 2007 CAS Web Service Virtual Directory." 

which seems to contradict the earlier statement ?

Has anyone got 2007/2013 in hybrid and can confirm their Free/Busy is working and what their urls are please ?

NB: I should add mail flow between all 3 (On prem 2007 /2013 and 365) is fine.

Thanks

I recommend that you post your question in the Exchange Online forum.

http://social.technet.microsoft.com/Forums/en-US/onlineservicesexchange/threads

Set-OrganizationRelationship -Identity "Exchange OnPrem" -FreeBusyAccessEnabled:$true -FreeBusyAccessLevel LimitedDetails
And you need Directory Synchronization !

Thanks Ed,

I'll do just that.

MailStane, Dirsync up and running ok and Free Busy bits already set I'm afraid :-(