Desperate to email; Can you HELP?




Greetings,

I have re-examined my email setup on this new installation over the last
several days and frankly, cannot find the error. I am unable to send or
receive e-mails thru my hosted domain and would really appreciate any
insight. I’m desperate and cannot identify where else to examine. Thank you
for your time.

I have:
2 NIC’s, SBS 2003, Linksys wireless broadband router WRT54G3G, hosted ATT
domain.

Settings:
Internet Wizard – Broadband, A local router device, DNS provided by ATT,
Local IP of router 192.168.1.1, Static IP for ISP network connection(external
NIC value), Default value for local IP, enabled Firewall, enable email, use
DNS to route, use POP3, use Exchange (deliver directly), domain name, POP3
(mail server = pop.att,yahoo.com).

ISP provider –“ MX” points to my domain.com, “A” points to IP server default.

DNS Forward Lookup Zones – Name Servers include company.com AND
sbs-server.company.local. , with IP equal to default server 192.168.16.2.

SMTP – IP equals default server. Delivery “Fully qualified domain name” is
company.com.

POP3 –IP same.

Finally, I speculate these are my PROBLEM areas.

TCP/IP External NIC – Static IP = external NIC address AND NOT the address
provided by my ISP provider as specified by Microsoft help article 306802.
IF I CHANGE THIS ADDRESS TO ATT’S I CANNOT ACCESS THE INTERNET! Default
gateway 192.168.1.1 Preferred DNS 192.168.16.2

Router – Disabled DHCP, Firewall off, Default gateway = external IP.

Capable of telneting port 25, 110.

WHAT COULD BE WRONG?

--
Thank you,

Richard
.



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