[Dovecot] dovecot corrupted transaction log

[Timo Sirainen]

On Tue, 2013-06-11 at 00:34 +0200, John Fawcett wrote:
> Hi I came across this error which happend immedately after a mail
> delivery to the inbox. Should I look for the problem externally to
> dovecot (ie. file system, operating system) or within dovecot? I never
> saw this error before installing 2.2.1, with 2.2.2 I seemed to get even
> more of them so currently back on 2.2.1
> 
> Jun 11 00:00:05 rosalia dovecot: imap(myemail at mydomain): Error:
> Corrupted transaction log file
> /var/vmail/mydomain/myemail at mydomain/dovecot.index.log seq 311: file
> size shrank (1184 < 1304) (sync_offset=1304)

Are you using NFS or some other cluster filesystem with multiple
servers? If yes, see http://wiki2.dovecot.org/NFS. If not, show doveconf
-n and describe the setup more.