High avaliabilty for IMAP/PROXY

Fabio S. Schmidt fabio at improve.inf.br
Thu Sep 18 15:39:58 EDT 2014

Thanks Vincent and Simon for the answers !

I am studying the Perdition and LVS-DR solutions !

Kind regards,

On 18 September 2014 16:38, Simon Amor <simon.amor at daily.co.uk> wrote:
> On 18 Sep 2014, at 19:58, Fabio S. Schmidt <fabio at improve.inf.br> wrote:
>> Hi,
>> - Sorry if it seems to be a little off-topic -
>> We have deployed Cyrus Aggregator and currently we provide load
>> balancing and high availability for the Cyrus Front Ends through DNS.
>> With this scenario, if a Frontend is unavailable it will receive
>> connections unless we remove it from the DNS record for the IMAP
>> service.
>> Does anyone have any better ideas to improve the high availability? I
>> was wondering about using HAPROXY vs NGINX but I do not know their
>> behaviours in cases like I mentioned above.
> We use LVS-DR with a cluster of 3 Cyrus pop/imap servers where servers 1 and 2 use heartbeat to failover the inbound IP in the event of an outage. They also handle outbound authenticated SMTP, again with LVS-DR.
> http://www.linuxvirtualserver.org/VS-DRouting.html
> Simon
> --
> Simon Amor
> Daily Internet Services Ltd
> T: +44 (0)115 973 7260
> W: http://www.daily.co.uk/

My best regards,
Fabio Soares Schmidt

Linux Professional Institute - LPIC-3
Microsoft Certified Technology Specialist: Active Directory

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