On 2013-07-26 8:28 AM, Kavish Karkera <kavish.kark...@yahoo.com> wrote:
We have 3 POP/IMAP Servers, running as load balancers through DNS round robin.


Dovecot version server 1 = 2.1.12
Dovecot version server 2 = 2.1.15
Dovecot version server 3 = 2.1.13

Mails and Indexes are stored over NFS  and we do have these setting enabled


mail_nfs_storage = yes
# Mail index files also exist in NFS. Setting this to yes requires
# mmap_disable=yes and fsync_disable=no.
mail_nfs_index = yes

There';s your problem.

You need to implement the Dovecot Director, which was created specifically to address this kind of issue...

http://wiki2.dovecot.org/Director

--

Best regards,

Charles


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