[OT] Re: Multiple destination mailertable
dml at UNB.CA
Tue Nov 25 15:14:32 GMT 2003
Ultramonkey (http://www.ultramonkey.org/) does a nice job of packaging
up LVS and Heartbeat, and includes a breakdown and examples
(http://www.ultramonkey.org/2.0.1/topologies/) of the various
scenarios. Currently using it for two IMP webmail servers...
On Tuesday, November 25, 2003, at 10:32 AM, Kearney, Rob wrote:
> You could implement Linux Virtual Server to "load-balance" the SMTP
> 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.
> -----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
> and take over on failure.
> Hope that helps.
> : David Lee I.T. Service :
> : Systems Programmer Computer Centre :
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