On Mon, 31 Mar 2025 16:39:23 +1100
Viktor Dukhovni via Postfix-users <postfix-users@postfix.org> wrote:

> On Mon, Mar 31, 2025 at 07:30:03AM +0200, Paul Neuwirth via
> Postfix-users wrote:
> 
> > > dovecot also nothing about chroot in config
> > > cwd and most open files is /var/run/dovecot doesn't seem to be a
> > > (ch)root-dir either.   
> > 
> > I again think I've got this solved.
> > Problem was allegedly very big E-Mails (10-30MiB) in the user's
> > mail-file.
> > 
> > I think that would be no issue with mbox format?  
> 
> Not a major problem for appending to the mbox, but potentially a big
> problem for an updating reader, since annotating messages as read,
> deleting a message, and performing other non-append modifications, may
> require rewriting much of the content of the mailbox while holding a
> lock.
> 
> The "mbox" format is obsolete, and should be avoided.
> 

ah I meant Maildir-format

need to search a good documentation how to migrate. And check if I have
enough inodes, or whether to create a new volume with another
filesystem.
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