Autore: Ted Cooper Data: To: exim-users Oggetto: Re: [exim] round robin -> load balancing query
Steve Dobson wrote: > Tony
>
> On Fri, 2008-02-15 at 15:47 +0000, Tony Finch wrote:
>> We use round robin DNS and it works fine, so long as nothing breaks :-)
>> Most MUAs will not try more than one IP address, so if the IP address they
>> have fixed on stops working they will break too. The way we deal with this
>> is to just shift the IP addresses of the broken machine onto a hot spare.
>> (We haven't automated it because our machines are too reliable to make it
>> worth adding complexity.) The other problem is that client computers often
>> don't respect the TTL on DNS records, so they may not respect changes
>> promptly. (This seems to be less of a problem now than a few years ago.)
>> The upshot is that you need to change the DNS several days before taking a
>> machine out of service.
>
> Why did you use duel A records rather than two MX records?
>
>
