[Dovecot] Corrupted Mail?

[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