How to Flush or Delete Postfix Mail Queue

How to Flush or Delete Postfix Mail Queue:-

there are following commands to flush/delete postfix mail queue.

1. List All Emails :-

To list all mail of queue, use one of the following commands.

postqueue -p

2. Flush All Emails :-

To delete or flush all emails from Postfix mail queue using the following command.

postsuper -d ALL

3. Flush Deferred Mails Only :-

You can only delete all deferred emails only from mail queue. Use the following command to delete deferred emails from the queue.

postsuper -d ALL deferred

4. Remove Specific Email :-

If you want to remove any specific email. Use the following command to remove specific emails only. First search the ID of that email like below command

postqueue -p | grep "email@example.com"

056CB129FF0*    5513 Sun Feb 26 02:26:27  email@example.com

Now delete the mail from mail queue with id 056CB129FF0.

postsuper -d 056CB129FF0