After adding a new email alias to the configuration, which command must be run in order to ensure the MTA knows about it? (Specify the command without any path but including all required parameters.)
Answer: newaliases 或 sendmail -bi
題解
「/etc/aliases」設定檔用來轉換使用者名稱，為了要讓MTA能夠使用這個設定檔，必須使用「newaliases」或是「sendmail -bi」指令將其轉為「/etc/aliases.db」二進制資料庫檔案。