[CentOS] Re: Mail server setup for small ISP

Fri Jan 4 03:48:44 UTC 2008
Fajar Priyanto <fajarpri at cbn.net.id>

On Friday 04 January 2008 10:30:32 Ugo Bellavance wrote:
> > AFAIK, redundancy for mail server seldom uses linux-ha/any other failover
> > stuffs. It is most common to use 'backup MX' in DNS settings. So, when
> > the main server in unreachable, the sender mail server would try to the
> > secondary MX through DNS query.
>
> That's the easy part, but where do you store the e-mail once you have
> accepted it?  If the pop/IMAP server is down for a while, people won't
> be able to retreive their e-mail...

The secondary MX will temporarily store the mails. And when the primary server 
is up again, it will get all the mail from the secondary. Yes. there will be 
a down time in terms of mail service for users.

Maybe others can recommend a better best practice for this.
-- 
Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial 
http://linux2.arinet.org
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