Question : Exchange 2003 no inbound and local delivery

event viewer gives me this:

A non-delivery report with a status code of 5.0.0 was generated for recipient rfc822;[email protected] (Message-ID <1A7A0B5037D8FC488B394B98042AFE4F41D[email protected]ompany.com>).  
Cause:  This indicates a permanent failure. Possible causes :  
1)No route is defined for a given address space. For example, an SMTP connector is configured, but this recipient address does not match the address spaces for which it routes mail.  
2)Domain Name Server (DNS) returned an authoritative host not found for the domain.  
3)The routing group does not have a connector defined û mail from one server in the routing group has no way to get to another routing group.    

Solution: Verify that this error is not caused by a DNS lookup problem, and then check the address spaces configured on your STMP connectors. If you are delivering Internet mail through an SMTP connector,  consider adding an address space of type SMTP with value ô*ö (an asterisk) to one of the SMTP connectors to make routing possible. Verify all routing groups are connected to each other through a routing group connector or another connector.

dns lookup check are ok
I have no connectors. I have no routing groups.

Inbound mail and local delivery don't work, outbound mail works.  

What do i do?

Answer : Exchange 2003 no inbound and local delivery

can you telnet to port 25 of your server from the outside world? and if so, can you do the following:

Telnet (external IP or hostname) 25
helo
mail from: [email protected]
rcpt to: [email protected]
data
Subject: Testing
.

do they get the mail? and if not, where does it queue?