Use this command to release a single email message from on hold:
postsuper -H 070788B31
  Release all email messages from being on hold with this command:
postsuper -H ALL
  Use the following command to release on hold messages just from [email protected]
postqueue -p | awk ‘BEGIN { RS = “” } { if (7 == “[email protected]” ) print 1 }’ | tr -d ‘!*’ | postsuper -H –
CLICK HERE to see our full Postfix Cheat Sheet using terminal commands.

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