Manage the Mail Queue Using the mailq Command
In this final step, we will learn how to manage the mail queue using the mailq
command.
First, let's take a look at the current state of the mail queue:
sudo mailq
Example output:
-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
0A1234B6 1234 Fri Jan 1 00:00:00 [email protected]
[email protected]
0B5678C9 2345 Fri Jan 1 00:00:01 [email protected]
[email protected]
As you can see, there are two emails currently in the queue.
Now, let's say we want to remove one of the emails from the queue. We can use the postsuper
command with the -d
option to delete a specific email:
sudo postsuper -d 0A1234B6
This will remove the email with the queue ID 0A1234B6
from the mail queue.
If you want to retry the delivery of an email that failed to be sent, you can use the postsuper
command with the -H
option to hold the email in the queue and then release it later:
sudo postsuper -H 0B5678C9
This will hold the email with the queue ID 0B5678C9
, preventing it from being processed until you're ready to release it. To release the email, use the postsuper
command with the -r
option:
sudo postsuper -r 0B5678C9
This will release the email back into the queue for delivery.
By using the mailq
and postsuper
commands, you can effectively manage the mail queue on your Linux system, ensuring that emails are being delivered as expected and addressing any issues that may arise.