LMTP re-reading all messages

[Timo Sirainen]

On 13 Aug 2014, at 10:24, Florent Bautista <bautista.florent at gmail.com> wrote:

> I have a little problem with Dovecot 2.1.17 and MailDir accounts.
> 
> I was using a shared file system (MooseFS), and all was pretty stable.
> 
> Now I'm switching to CephFS, and Dovecot LMTP have problem to deliver mails.
> 
> Very often, on large accounts, LMTP processes are running for a few hours
> before delivering the message.
> 
> When I strace it, I can see that they are reading (open and stat
> operations) ALL the messages of the account.

You didn't provide doveconf -n output, but I'm guessing the problem is Maildir++ quota. Switch to dict-file quota and the problems should go away. http://wiki2.dovecot.org/Quota/Dict