I'm working on a university's research cluster with nodes that all run CentOS7 
and are joined to the school's Active Directory domain.  Our domain is part of 
a statewide forest that contains every state university, and we have used this 
arrangement to grant cluster access to users from other Universities to our 
cluster.  

Recently, a user from outside my Universities domain have said they cannot log 
in anymore which caused me to look into this issue.  I found that if I issue an 
id command for a user in a different domain in the forest, it gives me the 
error "no such user".  I know that our setup used to work, and after looking 
into it and trying to replicate the old and new behavior I found out that 
CentOS7 machines with sssd 1.16.4 can get results from other domains in the 
forest, but machines with 1.16.5 cannot.  

Is there some setting that changed between these minor versions that would 
cause this?  Is it possible this is not caused by sssd?  I'm testing a node 
with CentOS 7.9.2009 which doesn't return other domains in the forest and a 
node with CentOS 7.7.1908 which does return results from other domains. 
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