1. Go to CentOS WebPanel Admin GUI at http://SERVER_IP:2030 or https://SERVER_IP:2031 and login.
2. From the navigation menu, go to Email and click on Manage Mail Queue under it.
3. You can manage your mail queue as following,
A. To recheck the mailque listing, click on the Refresh button.
B. To reinitialize the queue mails agian, click on Process Queue.
C. If you want to remove all the queue mails, click on Remove Everything.
4. To filter mails in categorized format, you can see this below shape as the status of the mails in queued. It will also show the number of emails filtered under the category.
5. Listing of all mail queue will be shown under it. You can view or remove any mails from the listing as needed.
A. You can see the message queue id, size of the emails, arrival time of it, Sender and Recipient email addresses.
B. To see the details of the mail header, click on Details.
C. To Remove the mail from the queue, click on Remove button.
D. To view the mail contents, click on View button.
E. If you want to delete multiple queued mails, select those mails and click on Remove selected button.