Email Server on subdomain

[JM]

Hi,

	I have a localdomain, mydomain.com.  In mydomain.com I have a local DNS. 
which resolves the mydomain.com workstation and the MX for the said domain.

       I want to setup another email server ,subdomain, 
workstation1.mydomain.com i already finish doing the setup and now i want to 
make the necessary change on my DNS... at this point im stuck..

      how can i setup my DNS MX record to point to workstation1.mydomain.com 
if someone emails a user-vEgOWn/6yzlUvZw60irGklZU9NkXhid/AL8bYrjMMd8 at public.gmane.org?

     my goal is:
		if someone emails user-3Q2Tfjf0mexWk0Htik3J/w at public.gmane.org the MX will be 
workstation10.mydomain.com
		if someone emails user-vEgOWn/6yzlUvZw60irGklZU9NkXhid/AL8bYrjMMd8 at public.gmane.org the MX will be 
workstation1.mydomain.com


im using qmail as smtp.

TIA
jm
--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml