[Dovecot] Corrupted Mail?

[Arthur Dent]

On Tue, 2014-05-27 at 16:09 +0200, Robert Schetterer wrote:
> Am 27.05.2014 16:04, schrieb Arthur Dent:
> > On Tue, 2014-05-27 at 15:44 +0200, Robert Schetterer wrote:
> >> Am 27.05.2014 14:56, schrieb Arthur Dent:
> >>> Hello All,
> >>>
> >>> I have a Dovecot v2.2.12 installation running on a Fedora 20 box which
> >>> is the mailserver for my family. This means that it is serving only 4
> >>> accounts.
> >>>
> >>> I use fetchmail->procmail to feed Dovecot and I read my mail on clients
> >>> such as Evolution on (another) Fedora 20 machine, iPad/iPhone or
> >>> squirrelmail on the web (running on the same Fedora 20 server).
> >>>
> >>> The average mail throughput for the whole family is around a couple of
> >>> hundred messages per day, but each (and every) day I get between 3 and
> >>> 10 of the following messages:  
> >>>
> >>> dovecot: imap(mark): Error: Next message unexpectedly corrupted in mbox
> >>> file /home/mark/mail/MLists/Fail2Ban at 3407473: 1 Time(s)
> >>>
> >>> I have googled, but with little success. What I have found seemed to
> >>> suggest that removing the .index files and allowing Dovecot to rebuild
> >>> them will solve this. I did:
> >>> find /home -type f -name "dovecot.index.*" -exec rm -f {} \;
> >>> but it has made no difference.
> >>>
> >>> Can anyone help me solve this please?
> >>
> >> at this small setup simply use maildir as format
> >> and use getmail to fetch, sieve may do sorting
> >>
> >> see
> >> https://sys4.de/de/blog/2013/04/12/abholdienst-fur-mail/
> >>
> >> sorry german but setup should speak for its own
> >>
> >> getmail does also deliver into maildir directly ( without dovecot deliver )
> >> if you dont need to sort through sieve
> > 
> > Well thanks - but I have been using an mbox setup for about 10 years. It
> > is only since I upgraded to F20 that I have been experiencing this
> > problem. I may look at switching to maildir for the future, but for now
> > that's too big a job...
> > 
> > Any other ideas?
> > 
> > Thanks
> > 
> > Mark
> > 
> 
> http://wiki2.dovecot.org/MboxProblems

OK - Unless I'm missing something, all that page (which I'd already
read) tells me is that I may have to delete the dovecot.index file(s) -
which I've don (several times). I still have the same problem. Every
single day.

Anything else?