Timo Sirainen wrote:

But you didn't upgrade both servers. The problem could be caused just as well by the 2) server.

Is it that we should have had both kernel equal?

Timo Sirainen wrote:

What do you use as NFS server?

We use Netapp's 2050c NAS box.

Timo Sirainen wrote:

Anyway since you've already set all the Dovecot's mail_nfs*=yes settings

Would setting up any different lock mechanism, work? Currently we have gone with defaults.

Timo Sirainen wrote:

Dovecot really wants a perfectly working NFS setup, and it's not always easy to do that.

Even though it might be difficult, is there any ideal, sure shot setup. We can try that as well.

Thank you!

--- jigs

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