mdbox vs. maildir format

[Steve Litt]

On Tue, 2022-10-18 at 16:48 +0200, Bernardo Reino wrote:
> On 18/10/2022 12:17, Michael wrote:
>  >
>  > [...]
> > so, raid is mandatory, which is already the case, but what about backup? 
> > how can i achieve a backup/snapshot of both, the mdbox (nfs share) and 
> > the index files (local raid) and assure they are consistent?
> 
> You can use doveadm to backup the mailboxes, which should work correctly 
> even in a live system.
> 
> My backup "strategy" (hopefully it deserves that name) is to weekly run 
> something like:
> 
> for MAILBOX in $USERS; do
>          doveadm expunge -u "$MAILBOX" mailbox Trash savedbefore 7d
>          doveadm expunge -u "$MAILBOX" mailbox Spam savedbefore 30d
>          doveadm purge -u "$MAILBOX"
> 
>          LOCATION2="mdbox:/srv/snap_mail/$MAILBOX/mdbox"
>          doveadm -v backup -u "$MAILBOX" -P "$LOCATION2"
> done

Do you think the preceding shellscript will work if I store my Dovecot messages in
the Maildir form?

Thanks,

SteveT