On 5.5.2013, at 3.56, Emmanuel Dreyfus manu@netbsd.org wrote:
On april 17th, I upgraded from dovecot 2.1.13 to 2.2.0. Since that time, I had two different users that reported received three incident of messages that disapeared from their mailboxes.
The mailbox format is mbox on local FFS filesystem (no NFS), and I use filesystem quotas (but both users are far from filling their quotas). When the message disapeared, it was always a whole rand of dates. On the last incident reported, the user also saw some message being duplicated many times.
There are some locking code changes between v2.1 and v2.2, which I guess might be buggy. But I can't reproduce any corruption with stress testing. What's your doveconf -n output? Are you delivering mails via dovecot-lda or something external?
Does that ring a bell? I am tempted to downgrade to 2.1.13. Does it makes sense? Is it safe to do so?
When downgrading, I recommend latest v2.1.