Question : Exchange 2010 first time setup - can not send or receive email outlook 2003 outlook 2007

Hello Experts,

We are migrating from a working Linux mail environment to a fresh installation of Exchange 2010 in a windows 2008 r2. Forest is a Windows 2003.

Based on Microsoft Reading the mail database file and the log files are on separate partitions.
I have the following setup:
a) Internet ---Linux Firewall 192.168.1.3)---(192.168.1.2 Exchange Server --- (192.168.1.1-Cisco Pix Firewall (192.168.7.1)-- Active Directory (192.168.7.2)
The exchange server 2010 gateway is the Linux box, i also have a route on the Exchange server pointing to the Pix to access the AD in the internal network.
for testing purposes, i have a firewall rule allowing all traffic to and from.
b) I was able to pull all the users from the active directory and create the email accounts.
c) Due to money and hardware limitation, we can not use an Edge Transport server, so i have installed
Internet Mail Flow Directly Through a Hub Transport Server following this link (based on what i read is not recommended)
http://technet.microsoft.com/en-us/library/bb738138.aspx

Problems:  
Can someone guide me on what am i missing? I can not connect to exchange server with my clients. Obviously the boss is not happy with no email what so ever :-)

1-- Most of my users have old windows 2003 clients, i can not send or receive emails.  (Email used to work under the Linux platform)
It does not matter if i try to use pop3 or imap. I need your help on getting this server working. I have no mail connectivity to send or receive
- i installed office 2007 ( i read somewhere that authentication is different) - does not work either
- i am using the password for the active directory for my user.
- when setting up my client do i put [email protected] (internal AD name) or [email protected] (public mail user)
Tried both not working
2- What ports need to be open facing the internet for exchange 2010?  I opened (25,110,143,993,587)

From https://www.testexchangeconnectivity.com/
Results:
Testing Inbound SMTP Mail flow for domain [email protected]
  Failed to test inbound SMTP mail flow.
Performing Outbound SMTP Test --  Outbound SMTP Test Successful  -- No blacklist

Please help, not sure what other information you might need, i will be glad to provide it, i am thinking it is something small to complete
the puzzle. Thank you and Happy new Year!

Answer : Exchange 2010 first time setup - can not send or receive email outlook 2003 outlook 2007

Have you configured a Send Connector?
Under Organisation Configuration > Hub Transport > Send Connector
you need to setup a connector with an address space of * to use either DNS or smarthost.

If you use DNS then you need to configure a rDNS(PTR) record for say mail.yourdomain.com an A record in your external DNS for mail.yourdomain.com that points to the external IP of your network (Find out what your external IP is by going to http://whatsmyip.org )

Then on the FQDN section of your send connector enter mail.yourdomain.com

ypu will also need to setup an SPF record see: http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/

if you havent already you will also need to configure an MX record that points to mail.yourdomaim.com

and then finally on the Receive connector under Server Configuratiom there will be 2 connectors ome that starts with Client and the other Default.  The one that starts with default you need to select the properties and check the box on the last tab to allow anonymous otherwise noone will be able to send you email