two domains and secondaries

[Minh Huynh]

also make sure that sendmail knows which user you are talking about. let say
you have harpo at world-domination.com and harpo at wd.com and harpo at wd1.com
sendmail has to know the correct user to route the email to since you are
sharing the same email server for all 3 domains on one box. what you need in
this case is the user database. hope this helps.

"A.R." wrote:

> I have two questions:
>
> 1. I have one mail server called world-domination.com.  I have added two
> new domains
> at the nic wd.com and wd1.com.  I want to be able to use this one mail
> server to serve
> mail for the same set of users.  For example, harpo at world-domination.com
> works great.
> But, i want harpo at wd.com and harpo at wd1.com to work exactly the same.
> What is
> the "DNS" magic that needs to happen to allow this to work?
> -Multiple cnames?
> -Multiple mx's?
>
> 2. Could someone describe for me how secondary dns servers get updated
> by primary
> dns servers?  Specifically, if i change the records on the primary, how
> long, and what
> are the details of the file update/transfer on the slave (or
> secondaries)?
>
> Thanks for your help.  Please use no more than 2 syllable words in your
> response.
>
> Thanks in advance.
>
> Warmest regards,
>
> A. Rahman
> Systems Engineer