[Mailman-Users] Please view my error message

[조태연]

Error Message /var/log 
Apr  3 15:10:03 mail Mailman mail-wrapper: Failure to exec script. WANTED gid 12, GOT gid 501.  (Reconfigure to take 501?)
Apr  3 15:10:03 mail qmail: 986325003.793042 delivery 1089: success: did_1+0+0/
Apr  3 15:10:03 mail qmail: 986325003.796070 status: local 1/10 remote 0/20
Apr  3 15:10:03 mail qmail: 986325003.797752 delivery 1088: deferral: Failure_to_exec_script._WANTED_gid_12,_GOT_gid_501.__(Re
configure_to_take_501?)/

How do I reconfigure this error??
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