We have been using Spark client with Openfire (3.9.3) for few years now. Recently there were some changes done by our IT and Infra team on firewall and DMZ post which we are noticing that users are unable to login when they are connected within Domain. Once outside the domain (or connecting from internet), the same use is able to connect from the same system using same credentials. Need help to figure out how to debug this. we use MicroSoft AD ldap to authenticate users. ldap is hosted on a separate server which is accessible from the openfire server.
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