cannot access out of office settings in Outlook 2007

Posted on 2011-03-16
Last Modified: 2012-05-11
When I click on Tools then go to Out Of Office assistant in Outlook 2007, i receive an error message that states the following: Your Out of Office settings cannot be displayed, becuase the server is currently unavailable.   Try again later.

This only happens if I am connected to our corporate Exchange Server 2010 using RPC over HTTP. If I am physically connected to the corporate network and therefore connected to the exchange server utilizing TCP/IP, I am able to connect to the Out of Office Assistant. One other thing that I did notice is if I run the Test E-mail AutoConfiguration tool from Outlook while on the corporate network, the tests pass.  If I run this tool while off the corporate netowork, I get an error message that says Autoconfiguration was unable to determine your settings.  I can do everything else in Outlook while I am connected via RPC over HTTP.

Thanks for your help..
Question by:drock1978
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LVL 26

Accepted Solution

e_aravind earned 500 total points
ID: 35154419
Behavior of Outlook in domain Joined machines:
When a domain-connected client connects to the Active Directory directory service, the Exchange 2007 client authenticates to Active Directory and tries to locate the Autodiscover SCP objects that were created during Setup by using the user's credentials. In deployments that include multiple Client Access servers, an Autodiscover SCP record is created for each Client Access server. By using the user credentials, the Outlook 2007 client authenticates to Active Directory and searches for the Autodiscover SCP objects. After the client obtains and enumerates the instances of the Autodiscover service, the client connects to the first Client Access server in the enumerated and sorted list and obtains the profile information in the form of XML data that is needed to connect to the user's mailbox and available Microsoft Exchange features

Behavior of Outlook in non-domain joined Machines:
When Outlook 2007 is started on a client that is not domain-connected, it first tries to locate the Autodiscover service by looking up the SCP object in Active Directory. Because the client is unable to contact Active Directory, it tries to locate the Autodiscover service by using Domain Name System (DNS). In this scenario, the client will determine right side of the user’s e-mail address, that is,, and check DNS by using two predefined URLs. For example, if your SMTP domain is, Outlook will try the following two URLs to try to connect to the Autodiscover service:

Note: For Outlook to be able to locate the Autodiscover service by using DNS, there must be a host record in DNS for the Autodiscover service that maps the entry point, or public IP address, to the Client Access server where the Autodiscover service is hosted.

Related Article:
White Paper: Exchange 2007 Autodiscover Service 
LVL 26

Expert Comment

ID: 35154422
Another testing is:
in the "test email autoconfguration" @ Office

check for the response @ the
Protocol: Exchange HTTP

If the OOF,OAB,autodiscover URLs are not there
we need to add the same as the
ExternalURLs for the Autodiscover and EWS virtual directory

Author Comment

ID: 35158722
Ok.  My computer is joined to the domain and I can access the Out of Office settings when I am physically connected to the LAN.  When I am not on the LAN (I am therefore connected via HTTP over RPC) I cannot get to the Out of Office settings.  After reading the information listed under Behavior of Outlook in non-domain joined Machines, I think I know the answer.  Even though my computer is joined to the Domain, it cannot contact the domain when it is off the LAN, but I am able get Outlook to connect to the corporate Exchange server by using the outside OWA address to connect via HTTP over RPC.  However, if I connect to the VPN (thus I am then able to connect to the domain controllers), I can access the Out of Office settings from a remote location because I am connected to the VPN and can access the domain controllers.  I do have an CNAME record on the public DNS pointing to to my OWA address but my e-mail address ends in (as I can receive e-mail for both domains).  Therefore, it sounds like I need to add a DNS record for  Is this correct?  Does my SSL cert need to include the domain (currently the cert only includes the domain).  Thanks for your help.
LVL 26

Assisted Solution

e_aravind earned 500 total points
ID: 35158953
Therefore, it sounds like I need to add a DNS record for  Is this correct?  Does my SSL cert need to include the domain (currently the cert only includes the domain).

>> yes,  you need to have the name resolution for the and also a SAN entry with the name
(normally no need for the value

In the example  --> this can fail issue which will cause few minutes of delay to time-out and proceed to the below URL
>> so atleast need to have the Name resolution and the SAN entry for


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