Unified Messaging connection to O365 fails cannot connect to CAS server

[keith.fountain]

Unity 8.6 connection to Office 365 fails with Cisco Unity Connection Administration Task Alerts

Failed connected to Exchange CAS server at (https://outlook.office365.com/autodiscover/autodiscover.xml)

I can successfully  ping outlook.office365.com and have tested connection using the username and password.

Any help appreciated.

[Brandon Buffin]

Have you followed the steps here?

http://www.cisco.com/c/en/us/support/docs/unified-communications/unity-connection/118828-config-cuc-00.html

Also, take a look at the troubleshooting steps here.

http://www.cisco.com/c/en/us/support/docs/unified-communications/unity-connection/116641-problemsolution-unified-00.html

Specifically, verify that there are no firewall rules or routing issues that would keep CUC from being able to communicate with O365.

Brandon

[keith.fountain]

Hi Brandon,

Yes I have followed the guide and upped the micro trace as suggested but not sure how to get the logs as it is not installed on a windows box. I have tried to tftp the logs but can't seem to get the command right to get the correct log files despite furious googling. 

[Brandon Buffin]

See the following link for steps to generate and collect the packet capture.

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unity-connection/116190-qanda-product-00.html

Brandon

[itvetcisco]

Hi Brandon,

Thanks for the links, I can see in the capture file that it is resolving outlook.office365.com to cname outlook-emeawest3.office365.com and returning a number of IPV6 addresses for it. Not sure what it is doing after that though??

[Brandon Buffin]

Any firewall rules that might be blocking access?

[itvetcisco]

I think I might have found it, there is an old webscan box that no-one else uses any more but it might be that the Unity box never had it's config changed. Will let you know once I know more!!!

[itvetcisco]

False alarm, it was the proxy on the server that was doing DNS requests. Removed  it but still getting the same errors when running the test. Will look more tomorrow. Thanks for your advice, greatly appreciated.

[itvetcisco]

Hi Brandon,

Many thanks for your help, the discovery of the web server helped as I have used that and is now working.

Thanks again.