[Dovecot] Log sybnch error

[Timo Sirainen]

On 2.3.2012, at 4.14, Stephen Davies wrote:

> My mail log has many entries like:
> 
> Mar  2 12:34:13 server dovecot: imap(john): Error: Log synchronization error 
> at seq=2,offset=4264 for /home/john/Mail/INBOX/.imap/SMS Emails/dovecot.index: 
> Extension header update points outside header size

What filesystem is this? Are you using NFS or some other remote/shared filesystem?

Do these messages repeat more than once for the same mailbox? Have you recently upgraded from Dovecot v1.x?