Delete a Group of Messages from the Postfix Queue

旨於快速刪掉大量該 domain 發進來的信被 queue 住，導致寄信的服務被影響
   1: mailq | tail -n +2 | grep -v '^ *(' | \

   2: gawk 'BEGIN {RS = ""} /member[0-9]@domain.com/ {print $1}' | \

   3: tr -d '*!' | sudo postsuper -d -

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不要搞錯權限了
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Ref: https://blog.wnlin.org