Multiple Domains on one Exchange 5.5 Server

[SoonerIra]

I have seen several posts about this and I had everything configured right as far as I can tell but still can't receive mail.

I am receiving mail at one domain abc.com. I want to add at least two other domains; def.com, ghi.com to allow current receipients of abc.com mail to receive def.com mail.

Here is what I have done:

1. Added def.com and ghi.com to the routing table in exchange. I have tried <inbound> and routing to abc.com domain.
2. Added an MX record and an A record to the def.com and ghi.com zones in DNS to point to the exchange server.
3. Added an SMTP email address to my recipient properties. I have: imiller@abc.com,imiller@def.com in my email addresses.

I can ping mail.def.com and mail.ghi.com and get name resolution.

I can internally send an email to imiller@def.com or imiller@abc.com.

Externally I get an unknown host message.

I don't know if this makes a difference, but I am using NAT to translate the external IP address to the internal address of the exchange server.

What did I miss.

 

[AlexIT]

When you added an MX record and an A record for the def.com and ghi.com zones, did you do this at your ISP? Your internal DNS server will not provide this info externally...

Alex

 

[SoonerIra]

We do our own external and internal DNS... I actually added these records to both.

 

[AlexIT]

It takes a week or so for changes in name records (MX records) to percolate through all the internet name servers on the planet. Give it some time and then you should be able to access these from the outside. (I don't see anything that you missed...)

Alex

 

[ssalter]

I would like to see if anyone has recommendations on how to setup a redundant Exchange Server. If the server in New York fails, can users be automatically be failed over to the server in L.A.?

 

[AlexIT]

ssalter,

If you have multiple exchange servers, all belonging to the same organization (remember exchange has org, site, server names in the configuration) then mail delivered to yourdomain.com can be received by any of the servers in the organization. Likewise, you can have mulitple servers at the same site...

If you are asking about changing the MX records to point to another public IP, why bother, just set a static route internally that all mail coming to the old IP port 25 gets sent through the internal LAN connections to the other server port 25.

Alex

 

[SoonerIra]

Still don't work...

 

[spatrick60]

I have this running with 3 e-mail domains and it working.
Do you have reroute smtp turned on.

 

[SoonerIra]

yes here is a screen shot of my routing:

http://www.cyntergyllc.com/routing.jpg

<img src=&quot;

http://www.cyntergyllc.com/routing.jpg&quot;>

 

[Guest_imported]

somethings not right with your DNS. when I query for mx records in your cyntergyservices and cyntergytechnology domains, I'm getting SOA info. Are you sure your zone info is set up correctly?

 

[SoonerIra]

that is what I am not sure about... I think that is the problem.

How do I do it correctly?

 

[brontosaurus]

OK. DNS says that your server, ns1.cyntergyllc.com , is authoritative for both the cyntergyservices.com and cyntergytechnology.com zones. However, when I query that server, the only MX record I see is for cyntergyllc.com. So, where did you put those MX records?

 

[SoonerIra]

in the respective zones..

 

[SoonerIra]

Here is a screen shot of my DNS:

http://www.cyntergyllc.com/dns.jpg

 

[brontosaurus]

I think I see the problem. You haven't registered your name servers for cyntergytechnology and cyntergyservices with INTERNIC (or whatever registrar you use). You registered the domain name, but no name servers. Also, I would advise moving your NS entry below your SOA entry in your zone file.

 

[brontosaurus]

whoa, sorry Ira, my mistake. I had a bad net connection. You're registered. But I would check out moving that NS record anyway. Aside from that, if you don't mind, can you show me some of your cynergyllc zone?

 

[SoonerIra]

here it is:

http://www.cyntergyllc.com/dns1.jpg

 

[brontosaurus]

OK, NOW I think we've got it. You need to enter MX records for cyntergytechnology.com and cyntergyservices.com , just like you did in your cyntergyllc.com zone. Give that a shot.

 

[SoonerIra]

I finally got it... I was entering the MX records in wrong..

Thanks..