How can I fix this error from Postfix: OSError: [Errno 13] Permission denied: '/var/spool/mailman/in' )

Computer Tips - How can I fix this error from Postfix: OSError: [Errno 13] Permission denied: '/var/spool/mailman/in' )

Date: 2013jan22 OS: Linux Q. How can I fix this error from Postfix: OSError: [Errno 13] Permission denied: '/var/spool/mailman/in' ) A. Fix the permissions by doing: /usr/lib/mailman/bin/check_perms -f While logged in as root.