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Show the Postfix mail queue

harmlessMaildebian, ubuntu
user@server
postqueue -p

Shows all waiting messages with queue ID, size, time, sender and recipients. For deferred messages, the last failure reason appears in parentheses below. The last line gives the total number of messages and total size of the queue.

Note: An asterisk after the queue ID means the message is being delivered right now, an exclamation mark marks held messages.

Also searched as

  • emails stuck in queue
  • postfix show queue
  • why are emails not being delivered

Related one-liners

All in Mail

Flush the Postfix queue and retry delivery now

$postqueue -f
cautionMail

Delete a single message from the Postfix queue

#postsuper -d 4F2A31C0E12
destructiveMail

Delete all deferred mail from the Postfix queue

#postsuper -d ALL deferred
destructiveMail

Find the top senders in the Postfix queue

$postqueue -p | awk '/^[0-9A-Za-z]/ {print $7}' | sort | uniq -c | sort -rn | head -20
harmlessMail

View the content of a message in the Postfix queue

#postcat -q 4F2A31C0E12
harmlessMail

Delete all mail from one sender in the Postfix queue

#postqueue -p | awk -v s="info@example.com" '/^[0-9A-Za-z]/ && $7 == s {print $1}' | tr -d '*!' | postsuper -d -
destructiveMail

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