Ian Eiloart escribió: > --On 8 November 2007 14:13:02 -0500 JDavila@??? wrote:
>
>
>> Hi Exim Friends,
>>
>> How can I load balance (2) Exim servers for Inbound and OutBound
>> Deliveries. Any info will be much appreciated.
>>
>
> The simplest method is to make the two servers equal priority in your MX
> records. You'll get load balanced to within about 10 to 15% of optimal.
> Alternatively, you can offer a single MX record pointing to a round robin A
> record.
>
> For outbound, your mail clients will be configured to access a single
> domain. Make that domain a Round Robin DNS pointing to two IP addresses.
>
> Ideally, you should keep your MX IP addresses different from your message
> submission IP addresses, so that you can distinguish between inbound and
> outbound domains. It's pretty easy to arrange this just by changing your MX
> records.
>
> Assuming that we're talking about servers for languageworks.com, you have
> this set up:
>
> chip-74 % host languageworks.com
> languageworks.com has address 209.218.206.60
> languageworks.com mail is handled by 0 nyclns01.languageworks.com.
> languageworks.com mail is handled by 10 nyclns04.languageworks.com.
> chip-75 % host nyclns01.languageworks.com
> nyclns01.languageworks.com has address 209.218.206.60
> chip-76 % host nyclns04.languageworks.com
> nyclns04.languageworks.com has address 209.218.206.68
>
> Just change the MX records so that both servers have the same priority (and
> are configured the same way).
>
> You also can use DRBD and heartbeat to achive high availability with two
servers. You can replicate mailbox and spool with DRBD and with
heartbeat you can use only one IP for two servers and you only have a
active server. This is a good solution for your local mail clients.
