Openfire making outbound http calls, to subdomains of contegix

We have hosted openfire in our production network. And all the clients connect to this inside the internal network.

But, We have observed that it is making remote outbound calls to contegix subdomains.

We have spark clients connected to openfire XMPP port, so we don’t need another remote server support.

What are this, How can we avoid these calls and where this is configured ?