On 2/8/2012 7:21 PM, Joe Wong wrote:
> Hello Andy,
> 
>  Sorry I should state the details initially. I am hosting multiple domains say
> 
> joe.com
> jay.net
> some other domains
> 
> I would like to route email sent from user in joe.com through IP
> address 1, user in jay.net via IP address 2, the rest go through IP
> address 3.


The sender_dependent_default_transport_maps feature is intended
exactly for this.  See:
http://www.postfix.org/postconf.5.html#sender_dependent_default_transport_maps
and the mail list archives.




  -- Noel Jones

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