[Dovecot] Fault tolerant architecture

[Robert Schetterer]

Am 28.11.2011 23:14, schrieb Marcelo Salhab Brogliato:
> Hi,
> I'm new to this list and want your help.
> I'm the mail admin for some domains in Rio de Janeiro - Brazil. Today we have only one machine running dovecot (imap+pop3) with local mail.
> We are migrating to two virtual machines in kvm running in separate hosts. Then we have two main problems:
> - How to share mail files to both dovecots? We've been thinking about NFS using local indexes. Is this a good approach?
> - How do we have a fault tolerant mail servers? Our first solutions is using two IP addresses in our DNS records.
> 
> About NFS using local indexes, I'm configuring a test server. But how to configure local indexes when my mail_location comes from sql (userdb_home actually).
> I'm using dovecot 1.2.9.
> 
> I guess you already had some of these problems or maybe in another architecture these neither exists.
> 
> Thanks for any help,
> 
> Marcelo
> 

i have run , store drbd with ocfs behind keepalived loadbalancers
this should run with vm too, but it might not optimal, depening
i.e how much mailboxes etc
search this list archive, there were posts about equal issues

-- 
Best Regards

MfG Robert Schetterer

Germany/Munich/Bavaria