Running 2 mail servers in same domain.

  • From: "Hirantha Wijayawardena" <hirantha@xxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 19 Mar 2004 09:37:00 +0600

Dear experts!
I have to setup the demonstration mail server - exchange 2k3 to a company 
(their look forward to migrating exchange 5.5 to exchange 2k3). This has to be 
done with run both servers in parallel (exchange 5.5 & exchange 2k3) not affect 
to the existing users in exchange 5.5.
Exchange 5.5 server -->
Exchange 2k3 server -->
I setup the DNS server -           MX      10           MX      15           MX      20
ex55                 A
e2K3                 A
My question is -
If I create a user (john@xxxxxxx) in server, will get mails from 
the internet to john@xxxxxxx?
The user JOHN not exists in the server.
If possible can some one explain how a mail from internet finds the user in
Thanks in advance
- Hirantha

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