rootで/etc/smrsh/ に,wrapper のシンボリックリンクを張る.
$ exit
# ln -s /home/majordomo-1.94.5/wrapper /etc/smrsh/wrapper
rootで/etc/sendmail.cfを修正.
# vi /etc/sendmail.cf
# override file safeties - setting this option compromises system security
# need to set this now for the sake of class files
#O DontBlameSendmail=safe
O DontBlameSendmail=GroupWritableAliasFile
O DontBlameSendmail=IncludeFileInGroupWritableDirPath
aliasesファイルの末尾にmajordomoを追加.
# vi /etc/mail/aliases
majordomo: "|wrapper majordomo"
majordomo-owner: mlist
owner-majordomo: mlist
aliasesの変更を有効にする.
# newaliases