Dovecot HA/Resilience

[Marc Roos]

You have only one server? Or is this running on virtualized environment 
with shared storage etc? It is quite difficult giving advice with such 
little knowledge of the environment. 

I am trying to migrate a running server to a new one with different 
configuration and mailbox format for storage, without any downtime. 
Prefferably one user at a time. It is not as trivial as I expected.




-----Original Message-----
To: dovecot at dovecot.org
Cc: Kishore Potnuru
Subject: Dovecot HA/Resilience

Hi Dovecot team, 

I need help in configuring HA/resilence for my dovecot (POP3/IMAP) 
server.

I have one RHEL Linux POP3/IMAP server with Dovecot version 2.2.10. I 
also installed the postfix(version: 2.6.6) in it. At present it have 
around 10 domains and each domain is having around 20 email boxes. It 
has very simple configuration. 

User's reading the email via some internal applications/Outlook.

I would like to create resilience/HA for this environment. Could you 
please suggest me, what is the easiest way to achieve this?

If any one can suggest step by step that will be more helpful to me.  

Thanks,
Kishore