[OT] Re: Multiple destination mailertable

[Kearney, Rob]

You could implement Linux Virtual Server to "load-balance" the SMTP servers.
The LVS cluster should work regardless of the SMTP machine's OS (which
depends on the mechanism you employ in LVS).

I had this working and it works great, but I did not utilize "mon" which you
might want to use if your worried a host may go down.

www.linuxvirtualserver.org

-rob

-----Original Message-----
From: David Lee [mailto:t.d.lee at DURHAM.AC.UK]
Sent: Tuesday, November 25, 2003 4:57 AM
To: MAILSCANNER at JISCMAIL.AC.UK
Subject: [OT] Re: Multiple destination mailertable


On Tue, 25 Nov 2003, David Hooton wrote:

> Raymond Dijkxhoorn wrote:
> > You could put in a round robin DNS entry for those.
>
> Unfortunately if we have 3 hosts and do this, and one host goes down,
> one in three attempts will fail.  The idea I'm looking for would be
> similar to MX records only from the mailertable.

(We really are now way off-topic on this MailScanner list...)

Perhaps a combination of two things:

 1. Round-robin DNS;

 2. Something like "heartbeat" from www.linux-ha.org (it does UNIX, not
    just Linux), so that your n hosts (UNIX/Linux) can monitor each other
    and take over on failure.

Hope that helps.

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