How to transfer a domain mail to the another server.

["芦田克美" <ashida@gray.co.jp>]

Hi,All

Now,my client needs tranfering client's domain-mail
 to my mail server without movingmy server to client's office.

Actually,client want to manage my mail-host and transfer
non-client's account's mail to my mail-host.

If I use smtp's forwarding method ,I will get success.
But I don't want to increase account.
And I think that bellow setting,but I don't have trust.
Are there anyone who can advise me?

Please.

Katsumi.

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The environment(Example):
  client's domain = client.com
  my domain = my.com
  my mail-host = mx

What do I want to do:
  ??????@mx.client.com   -transfer-->  ??????@mx.my.com
(Ofcourse client.com and my.com are different network.
 For example client.com's IP is 210.112.34.21 and my.com's
IP is 210.134.231.111.)

My tring method:
1. Client's DNS's zone-file have second MX record.

                             IN MX 10 mail.client.com.  <-- default mail
server
mx.client.com.      IN MX 20  mx.client.com.  <-- added this line.

2.Client's DNS's zone-file have new host record.

dns         IN A 210.112.34.23  <-- This host already exists
mail         IN A 210.112.34.24  <-- This host already exists
www         IN A 210.112.34.25  <-- This host already exists

mx          IN A 210.134.231.112 <-- added this line.

EOF