No incoming SMTP mail

I built a new server with the same domain name as the old one. This new SBS
2003 server has ISA 2000 running. Everything but receiving mail works. I
used dynamic dns, with Direct Update, and I Can access the server remotely
with RWW or with RDC and pull up the OWA page as well. Sending is not a
problem, but after 72 hours, I get this delayed message notification below.
I have port 25 on my router set to forward to my server's external IP of
192.168.0.5. Please see my IPCONFIG below as well.

Any ideas?

Delay Message Notification:
The address to which the message has not yet been delivered is:
acsokai@xxxxxxxxxxxxxxxxx
Delay reason: SMTP error from remote mail server after MAIL
FROM:<gcsokai@xxxxxxxxx> SIZE=2692:
host mail.gtnconsulting.com [68.162.166.196]:
454 5.7.3 Client does not have permission to submit mail to this server.

My IPCONFIG:

Windows IP Configuration
Host Name . . . . . . . . . . . . : sbsmsg
Primary Dns Suffix . . . . . . . : GTNConsulting.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : GTNConsulting.local

Ethernet adapter Intranet: (Internal)
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com 3C905TX-based Ethernet Adapter
(Generic)
Physical Address. . . . . . . . . : 00-50-05-32-D7-7F
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.10
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.1.10
Primary WINS Server . . . . . . . : 192.168.0.11

Ethernet adapter INTERNET: (External)
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetXtreme 5751 Gigabit
Controller
Physical Address. . . . . . . . . : 00-11-11-71-35-64
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.5
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.1.10
Primary WINS Server . . . . . . . : 192.168.0.11
NetBIOS over Tcpip. . . . . . . . : Disabled




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Relevant Pages

  • Re: Server 2008 Folder Redirection
    ... Directory Server Diagnosis ... (Event String (event log = System) ... "Meinolf Weber" wrote: ... Connection-specific DNS Suffix. ...
    (microsoft.public.windows.server.general)
  • Re: Server 2008 Folder Redirection
    ... Home Server = server ... (Event String (event log = System) ... Connection-specific DNS Suffix. ...
    (microsoft.public.windows.server.general)
  • Re: VPN issues on SBS2003 with ISA 2004 installed
    ... The user can connect the VPN without trouble. ... Access Rule to allow these protocols. ... gateway of client is not point to PPP adapter RAS Server ... | Connection-specific DNS Suffix. ...
    (microsoft.public.windows.server.sbs)
  • Re: problems connecting to Network Shares over VPN
    ... Here is the information from the server and also from the notebook. ... PPP adapter Company VPN Connection: ... Connection-specific DNS Suffix. ... Wireless LAN adapter Wireless Network Connection: ...
    (microsoft.public.windows.server.networking)
  • Re: Companyweb will not load.
    ... AD domain name) both of which should be showing the IP address of the SBS ... Microsoft Small Business Server Support ... Connection-specific DNS Suffix. ...
    (microsoft.public.windows.server.sbs)