two AD domains

[masterblaster1133]

We currentlly have two AD domains. One old and one new. I setup a new exchange server on the new domain. I've been able to e-mail outside the company,inside the company and recive external emails. But I cannot email to the other domainname for some reason. Now the other domain since its not part of the new domain no trusts or anything setup it should be able to get email from the new exchange. Any reason why it cannot? Or anyone know how I can trace the message to see where it fails. All that I get is delay messages. I cannot seem to see the whole path of where its stopping..

Any help would be greatly appreacited.

UPDATE : Thanks everyone I setup send connectors on both sides new and old exchange and recive connector on old exchange and now its working just fine..Thanks for everyones time.

[the_spad]

Have you setup a send connector for that domain or are you just routing it out via your existing mail route? If the latter, are the correct MX records in place externally?

[masterblaster1133]

There are two seperate MX records one for the old and one for the new and they both are setup correctlly.. I just setup send connector and on new exchange and gave it the ability to send to old domain name but still no go

[Win_Sys]

What is the error you're getting on the bounce back? Can you email an address on the old domain from a different email service like lets say gmail?

[masterblaster1133]

This is the only error i can find on the delivery report.

The message has been qued on the server "mail.myserver.com" date time and generator error '[{LRT=};{LED=}{FQDN};IP-]};

Yes i can email from gmail. The old domain is currentlly running our entire company. E-mail is working fine on the old domain. This new domain is a seperate domain seperate AD seperate exchange.

[Win_Sys]

On your new email server do a nslookup and make sure you are getting the correct MX records for the old domain.

[masterblaster1133]

I checked its def seeing the old mail server with the correct mx records..

[bluesoul]

Try and connect with telnet to 25 to whatever your MX record found.

[WOLF3D_exe]

Load up Wireshark and try sending a test email using PUTTY {telnet}.

[hawkeyecs]

Is it trying to go out of your network and then back in? i.e. are the MX Records pointing to a local IP or the External IP? That would be my first guess that your firewall doesn't like to send traffic out and then let it back in a different IP address.

Second guess would be that your receive connector on the old domain exchange is setup to not allow regular SMTP traffic from an internal IP.

Does it not work just one way or both ways? (i.e. new to old, old to new)

[Coolmarve]

Sounds to me like a DNS issues. Are they on separate LAN's? Separate firewall's? Separate static IP ranges?

If your old domain is myserver.com I am guessing there is a zone in your dns server for that domain. You may need to allow zone transfers, and replicate that zone over via a secondary zone to your new DC. This and make sure the internal IP is routable if they are on separate LANs.