[Lula] Mail server ip changed issue.

[Cheeto]

I've done this and other IP migrations by binding both the old and new
ip's to the same box and having the mail server listen on both ips.  If
the ips are on the same subnet it's super easy, if it's on a seperate
subnet or IP space then it requires some more advanced routing using
route tables with iproute2 in a split access setup (two default gateways
using route tables to bind seperate gateways to each ip).  You can find
an example of this in the lartc howto at lartc.org.
Of course this assumes that your situation allows you to use both ip's
simultaneously.
Michael Hsu

On Wed, 2006-06-28 at 17:20 -0700, Titu Kim wrote:

> Hello,
>      I wonder how to solve the mail bounce issue
> during the process of switching a mail server from one
> ip to another(same dns name). DNS changes take a while
> for the latest ip to be refreshed. So, before new ip
> information about the mail server is refreshed to
> other dns server, all the mail sent between the gap
> will be bounced. Any idea?
> 
> Thanks
> 
> Kim TITU.
> 
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