On Jul 9, 2013, at 10:18 PM, jeffrey j donovan <dono...@beth.k12.pa.us> wrote:

> Greetings
> 
> it's been a while since I have done this.
> 
> I have an old server running a mail list. I have successfully relocated the 
> list to a new server.
> 
> what i need to do re-route any message sent incorrectly to this list to the 
> new server.
> 
> message to --> listname@oldHost ---> hits { smtp relay on smtpHost } " some 
> rewrite or alias / transport sends to the message to --> list name@newHost.
> 
> transport maps didn't seem to make sense. as when it arrived at the new host, 
> the message would still say To:list name@oldHost, so newHost is going to 
> throw it back.
> alias on the smtp relay said the alias had to be local, which made sense.
> What type of re-write do i need to perform this action?
> 
> suggestions and flames welcome
> -j

answering my own question

okay,.. I set up a generic map on my smtp relay

smtp_generic_maps = hash:/etc/postfix/generic

listn...@host1.example.com              listn...@host2.example.com

when the message arrives it is delivered to "host1" and host1 sends the message 
to host2.
How can I get the smtp relay to " not forward to host1 " but deliver directly 
to host2. Do I need to setup transport also ?
-j


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