sbs 2003 exchange issue/one domain can not recieve from

[DeltaMed1]

We took one of our business units and built them thier own Small business Server 2003 box. We moved thier MX to point to the new server. They can send and recieve email from every domain except they can not recieve from our parent company domain that used to house thier email. We recieve thier email, but cannot recieve our replys and there is no NDR returned.

 

[markdmac]

What are the domain names? Do they share the same DNS name?

I hope you find this post helpful.

Regards,

Mark

 

[DeltaMed1]

we took say hello.com and built a new server, moved hello.com to new server.
Old server still recieving some spam for hello.com but most mail going to new server.
Our old server has goodbye.com on it, people at goodbye.com can recieve from hello.com but can not reply or send to hello.com
and we recieve no NDR.

 

[markdmac]

OK, so if the old server is still receiving mail for the old domain then you have not set up the MX record properly for that domain.

Verify in the public DNS that hello.com points to the new server only. Verify that goodby.com MX record only points to the old server.

On the old server verify that its DNS does not have any zone information for hello.com. Verify that in recipient update services that hello.com is not listed.

Ensure that on each server's NIC it only lists itself or another INTERNAL DNS server. NO ISP DNS should be configured on the NIC. Check your DNS forwarders in the DNS Snap-In on each server. Put your ISP DNS on the forwarders tab.

I hope you find this post helpful.

Regards,

Mark