Resolved qmail maildir contains items even though there should be no mailbox

[Frostbolt]

I have an issue with my server slowly filling up. I have some email addresses defined with no mailbox (only forward). When I look in
/var/qmail/mailnames/<domain>/<username>/Maildir/new there are plenty of files there.

I may have switched between qmail and postfix a long time ago, currently the SMTP server that I have selected is Postfix.

How can I clean up emails that are not officially in a mailbox? And how do I prevent them being saved there at all?

I'm using ‪CentOS 6.10 and Plesk Obsidian 18.0.29 Update #3

 

[Frostbolt]

Can anyone help me with this? I can no longer update Plesk

 

[Bitpalast]

Are you asking about orphaned directories or files in the /Maildir/new directory? Normally entries there are emails. These are managed by the mail software. But if your user account no longer exists and these entries are orphaned they can simply be deleted, because nothing on the system knows they are there. Doing a backup before deleting stuff like that is always a good idea.

 

[Frostbolt]

Yeah well, the entries in /Maildir/new shouldn't be there, right? Since the user doesn't have a mailbox.

 

[Bitpalast]

If the user does not have a mailbox, the entries are orphans.

 

[Frostbolt]

Okay, thank you. I've removed all the old emails/files. It seems to work.