Thank you for reply, but my version of postfix is 2.2.

On Wed, Feb 10, 2010 at 9:03 PM, Wietse Venema <wie...@porcupine.org> wrote:
> Vladislav Antolik:
>> Hi,
>>
>> I'd like to configure this kind of funcionality.
>> I have 1 postfix box, which should relay mails to 1 of 2 internal mail
>> servers(192.168.1.1, 192.168.1.2).
>> When 1 internal mail server crashes, new incoming mails should be
>> automatically send to another internal mail server.
>> I don't want to use MX lookup.
>
> Use smtp_fallback_relay.
>
>> I tried this configuration:
>> in transport file
>>
>> example.com ? ?:[192.168.1.1]
>> .example.com ? :[192.168.1.2]
>>
>> but without success.
>
> This always produces [192.168.1.1] for example.com, and always
> produces [192.168.1.2] for stuff.example.com.
>
>        Wietse
>

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