domain name selection

[prabath]

I want to implement exchange based email system that represent
@ a.com
@ x.a.com
@ y.a.com
@k.y.a.com
Is it possible to register a single domain name (a.com)and implement this system. And also need to know whether this is possible with single exchange server.

 

[brontosaurus]

if you don't register the other domain names there's no way that a mail server on the internet will be able to find you. Internally however, it's not a problem.

 

[prabath]

That means when delivering mails it looks for whole part of the domain name (@y.x.a.com) ,not only the a.com . am I correct ?

for example take xxxx@y.x.a.com e mail address.
Will the sending mail server look only for the a.com and send it to the destination ? and recieving server take action based on other parts of the domain name ?

 

[brontosaurus]

yes, your first assumption is correct, they are separate and distinct domains and are treated as such by resolvers.