Yes. Please find the details of the servers below. I am executing the command from one of the new servers.

My Current Production Server details:
========================
Linux OS - Red Hat Enterprise Linux Server release 6.5 (Santiago)
Dovecot version - 2.0.9
Postfix version - 2.6.6
========================

New Servers:
==========================
Linux OS - Red Hat Enterprise Linux Server release 7.7 (Maipo)
Dovecot version - 2.2.36 (1f10bfa63)
Postfix version - 2.10.1
==========================

Thanks & Regards,

Kishore

On Mon, 27 Jul, 2020, 9:43 pm Sami Ketola, <sami.ketola@dovecot.fi> wrote:

> On 27. Jul 2020, at 23.11, Kishore Potnuru <kishore.reachme@gmail.com> wrote:
>
> Hi ,
>
> I have tried the below command from the new server. But I am getting an error. Anything is missing here?
>

Are you sure that is dovecot 2.2.36?

Sami