For 2.4 you would use
acl_driver = vfile
acl_global_path = /etc/dovecot/dovecot.acl
lazy_expunge_mailbox = EXPUNGED/
lazy_expunge_only_last_instance = yes
namespace inbox {
mailbox EXPUNGED {
autoexpunge = 32days
autoexpunge_max_mails = 100000
}
mailbox \Drafts {
lazy_expunge_mailbox =
}
}
namespace ns {
hidden = yes
list = no
prefix = EXPUNGED/
subscriptions = no
mailbox EXPUNGED {
quota_ignore = yes
}
}
mail_plugins {
acl = yes
lazy_expunge = yes
}
but you never did explain "how it does not work".
Aki
> On 15/06/2026 19:17 EEST Randolf Richardson via dovecot <[email protected]>
> wrote:
>
>
> One of the Dovecot repository maintainers on GitHub recommended
> sending an eMail to you regarding the issue I encountered:
>
> Documentation for lazy-expunge doesn't work
> https://github.com/dovecot/documentation/issues/1555
>
> --------
> I converted from Dovecot 2.3 to Dovecot 2.4.1, which was not a minor
> upgrade. Anyway, I can't get the lazy-expunge plugin to work in 2.4.1
> now. Here's my configuration file from 2.3 -- how can I get this
> working in 2.4.1? Thanks.
>
> namespace inbox {
> mailbox EXPUNGED {
> autoexpunge = 32days
> autoexpunge_max_mails = 100000
> #auto = create
> }
> }
>
> # Namespace for lazy_expunge plugin
> namespace {
> prefix = EXPUNGED/
> hidden = yes
> list = no
> subscriptions = no
> separator = /
> location = maildir:~/Maildir.deleted:INDEX=
> }
>
> mail_plugins = $mail_plugins lazy_expunge acl
> plugin {
>
> # Move expunged messages into the .EXPUNGED namespace
> lazy_expunge = EXPUNGED/
>
> # Only move to expunged storage if this is the last copy of the
> message in the user´s account
> lazy_expunge_only_last_instance = yes
>
> # Exclude Drafts from lazy expunging
> lazy_expunge_exclude = \Drafts
>
> # Copy of each message is done with hard links whenever possible
> maildir_copy_with_hardlinks = yes
>
> # Define ACL so that user cannot list the .EXPUNGED mailbox
> # Example entry: .EXPUNGED owner rwstipekxa
> acl = vfile:/etc/dovecot/dovecot.acl
> # dovecot.acl contains one line: EXPUNGED owner ip
>
> # Expunged messages most likely don't want to be included in quota:
> quota_rule = EXPUNGED:ignore
> }
> #lazy_expunge_mailbox = EXPUNGED
>
> Here's an example of someone else who encountered the same problem:
> https://www.dovecot.org/mailman3/archives/list/[email protected]/thr
> ead/25BXSHQWGQQ3ACVZSYF3O3LC4WROTUCI/
>
> Randolf Richardson, CNA - [email protected]
> Inter-Corporate Computer & Network Services, Inc.
> Beautiful British Columbia, Canada
> https://www.inter-corporate.com/
>
>
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