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Cannot RECEIVE external mail - 8.May2008 3:16:08 PM

cobritek

Posts: 6
Joined: 5.May2008
Status: offline

Hi,

I have a dedicated IP 75.x.x.x NAT to 10.1.10.1 on Comcast Business.
Registered myCompany.com
Set ns1.myISP.com and ns2.myISP.com
ISP set DNS records and MX record "mail" to point to my IP
Ping myDomain.com returns okay and ping mail.myDomain.com reuturns okay

Forwarded port 25 from external to internal 10.x.x.x

ISA 2004 Windows Server 2003
External NIC is 10.1.10.116
Internal NIC is 192.168.0.254

Windows Server 2003 Active Directory with Internal namespace corporate.myCompany.com
created DNS record in internal namespace for Exchange calling it "mail".corporate.myCompany.com
created forward lookup zone in internal DNS calling it mail.myCompany.com
created A record with blank name pointing to my internal IP of the Exchange

Exchange 2003 recipient policy added myCompany.com.
Ran the internet mail wizard
Published Exchange Server using mail rule pointing to my Exchange internal IP.

I can send and receive mail internally and can send mail externally. Cannot RECEIVE from External. What DNS records and what zone should they be created in? I have a feeling that is the problem.

Thanks so much in advance for any help!