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How to blacklist/whitelist email id and domain in sendmail using spamassassin

- Edit

Edit file local.cf 
# vim /etc/mail/spamassassin/local.cf        
###wirte below paramet and bla
blacklist_from *@example.com
blacklist_from xyz@gmail.com
blacklist_from *.example.com

whitelist_from  *@xyz.com
whitelist_from abc@gmail.com

Restart spamassassin service
#/etc/init.d/spamassassin restart
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I am a passionate cloud and DevOps professional specializing in Linux and open-source solutions. Through this blog, I share my knowledge and experience with the community, offering tips and insights on cloud technologies and DevOps practices.
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