Jabber domain same as Webex Domain

Question

Hello my customer has the following
CUCM 10.5.2
IM&P 10.5.2
Jabber 4 Windows 10.5.3
Expressway Core / Edge 8.5.1
Automatic discovery keeps defaulting to Webex. All the proper SRV records are in place for UDS / CUPlogin / CollabEdge but since Webex is first in the automatic login discovery sequence.It keeps stopping at Webex as the place to login to and of course when you try to login it fails. If I manually select IM&P from the list in the jabber client, login works fine, both inside and outside the network. I know there are install switches to remove webex from the discovery but this is difficult to manage. 
I asked them if they use Webex and they do. As far as they know they only using Webex Meeting Center, not Cloud IM (also known as Webex Connect). Would a customer having Meeting center only cause this problem? I can't see why it would. Is there some sort of DNS test I can do to see if my customers domain is pointing to Webex Cloud IM?
Ryan

Answer 1

Oh this seem to be a common issue, one that my customer ran into recently. When customers put a request for webex meeting, you need to request that webex messenger shouldn't not be enabled. Its part of the order process, once that many sales guy/account managers are not aware of. You have to contact WebEx provisioning team to disable webex messenger service for your domain otherwise jabber will never work. Once the CAS lookup succeeds, it will go off premise to try and login and because your users are not provisioned there, login will fail.
So get on the phone with Cisco webex team and have them remove your domain from the webex messenger service