Fixing Postfix error unknown user name value: nobody

System: RHEL 6.9 Just got complain from App support Postfix was error. Check on /var/log/maillog show this error postfix[2319]: fatal: file /etc/postfix/main.cf: parameter default_privs: unknown user name value: nobody The…

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Set up sysctl variables on CentOS/RHEL

A sysctl variable represents file locations under the /proc/sys directory. The dot(“.”) notation is used when setting in a configuration file. RHEL/CentOS 7 – Set a sysctl parameter value immediately…

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