Spamassassin not changing header

I have two mail servers for two different domains. I am using OX-Appsuite which is a postfix based system. Using spam assassin for both cases with pyzor. One server is marking spam perfectly but another server is not. Interestingly, I am using the same configuration for both servers. Except for domain names, both servers are kind of identical.

Please help me to debug the spamassassin.

Thanks in advance.