[Dovecot] How can we horizontally scale Dovecot across multiple servers?

[Robert Schetterer]

Am 31.10.2011 09:47, schrieb Arlin:
> Could anyone please respond to this query. Thank you!

you may use loadbalancers i.e (keepalived etc) and/or

http://wiki2.dovecot.org/FeatLoginProxy
http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/Proxy

look the list for cluster setups etc

reading your former post
you want to use many outdated prog versions dont do that
a san for storage might be a good choice
some of the list use drbd with ocfs2
and other cluster filesystems

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> From: Arlin [mailto:arlin at mvs.us] 
> Sent: 28 October 2011 17:06
> To: 'dovecot at dovecot.org'
> Subject: How can we horizontally scale Dovecot across multiple servers? 
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> Hi,
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> How can we horizontally scale Dovecot across multiple servers? Do we require
> to install independent instances of Dovecot on each server?
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> We are planning to use a NAS/SAN device using ZFS or EFS for email storage.
> Each logical unit will be of 10TB and similarly as the no: of user increases
> we are planning to add multiple 10TB units.
> 
> In this case how we can manage the email storage on multiple volumes from
> Dovecot.
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> The configuration of our existing system is:-
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> Dovecot 1.0.15 / Maildirs
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> Postfix 2.5.5
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> Debian 5.0.9 (Lenny)
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> MySQL 5.0.15
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> Please advise.
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> Thanks in advance.
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> Creative Regards,
> 
> Arlin
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-- 
Best Regards

MfG Robert Schetterer

Germany/Munich/Bavaria