Hi Guys,

I have ran into quite an interesting problem - and it seems it appeared out of nowhere.
I have an Exchange 2007 server, where the autodiscover service stopped working. I'll try and post as much details as possible.

My internal and external URLs are different.

Browsing to the Autodiscover service on https://mydomain/autodiscover/autodiscover.xml returns the expected error 600 Invalid request.

In EMS the output for Test-OutlookWebServices is as follows:

However Outlook (editions from 2007 to 2013) are not happy apparently:

Output is as follows:

I use self-signed certificates, that has not changed or expired.
The local DNS has the _autodiscover SRV record set correctly.
Local Firewall is accepting traffic on port 80 and 443 between the CAS server and the local network.

If needed: I get "Operation Failed. An object cannot be found" when I try and download the OAB.

I am out of ideas and any help will be greatly appreciated.

Shaun

Shaun, 

I will suggest you start with using the Microsoft Remote Connectivity Analyzer found at https://testconnectivity.microsoft.com/.

Regards

Shaun, 

I will suggest you start with using the Microsoft Remote Connectivity Analyzer found at https://testconnectivity.microsoft.com/.

Regards

Hi,

Before we go further, I'd like to confirm the following information:

1. Autodisocver internal URL: get-clientaccessserver |fl autodiscoverserviceinternaluri

2. Where do you directly access the URL: https://mydomain/autodiscover/autodiscover.xml? Exchange server or internal client or external client?

3. Verify if your SRV record is working properly. For more detail steps, you can refer to the following article: http://technet.microsoft.com/en-us/library/gg398680.aspx

Thanks,

Hello,

In reply to your questions:

1. https://FQDN/Autodiscover/Autodiscover.xml

2. I get the same result on an internal client and the Exchange Server itself.

3. Verified that SRV record is created and working properly.
Output of nslookup

Server:  FQDN
Address:  192.168.50.8

_autodiscover._tcp.***.local    SRV service location:
          priority       = 0
          weight         = 0
          port           = 443
          svr hostname   = FQDN
FQDN   internet address = 192.168.50.8
FQDN   internet address = 192.168.244.50