Relay email for Multiple domains on one exchange box

sna1alm
sna1alm used Ask the Experts™
on
Hey guys,
I need to relay email for another domain name unlike whats running on our domain controller (and exchange server).  I've already taken care of the external DNS part for the new name, and made the necessary changes to the default recipient policy on our exchange server.  

My question is internal DNS on Server 2003 (or our Domain controller).  I need step by step instructions on "what" to create.  Additiional MX records, Host records?  

Please advise.
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Commented:
the other domain is in your same exchange organization or it is external?
the other domain is publically registered on the internet or it for some local partner?
will the other domain pull the data or you will forward data to it?
what version of exchange are you using for both your domain and the other domain?

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Commented:
the other domain is in your same exchange organization or it is external?
Its not, we bought the domain name and thats it.  Configured external DNS relay to point to one of our external IP's (same one our current domain email relay operates on).

the other domain is publically registered on the internet or it for some local partner?
Itsw publicly registered.  We own it.

will the other domain pull the data or you will forward data to it?
Thats the thing we haven't created another domain  (i.e. we don't have DC for it).  Is email relay possible without another DC?

what version of exchange are you using for both your domain and the other domain?
Its a server 2003 shop.  Exchange 2003, and server 2003.
OK what i gater is you have 1 exchange server. It is set up to recieve mail for @domain1.com. and you want it to recieve mail for @domain2.com. Is that correct?
creating a recipient policy should be enough, however your smtp service may only be accepting mail for the original domain.

telnet to your server on port 25 and try to send a message to an alias at the new domain.

eg

telnet mailserver.yourcompany.com 25
helo makeupaname
mail from:someone@somewhere.com
rcpt to:mynewuser@mynewdomain.com
data
test message
.
.
two dots after the data part on individual lines
Commented:
sna1alm,

if you want to relay single domain you can change recipient policy to make all internal emails @youdomain  which doesn't have to be the same as you active directory domain

but if you question is to receive email for other exchange domain which will then download the emails from your exchange server, you need to create smtp connector with name space of other domain and the option of queue email selected, the other exchange should create smtp connector to do etrn from your server

good luck

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