I've had some configuration issues with my postfix-mailserver. Apparently A LOT of messages have been sent from other mailservers, to my postmaster address.
I've already managed to redirect all future mails from root/postmaster to a mailbox I'm able to access externally.
Now, there are currently +3000 mails still in the 'root' mailbox.
How can I forward ALL these mails to a specific mailaddress? (Seperately; or as 1 big attachment doesn't matter) And how can I delete ALL these mails at the same time?
I cannot seem to find the correct command within 'mail'.