Enforcing a match between FROM address and sasl username Zimbra

 If the exception db is not used

zmprov mcf zimbraMtaSmtpdSenderLoginMaps  proxy:ldap:/opt/zimbra/conf/ldap-slm.cf +zimbraMtaSmtpdSenderRestrictions reject_authenticated_sender_login_mismatch

vi /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf
permit_mynetworks, reject_sender_login_mismatch

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About Penguin Technology

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.