Can't access OWA or Remote from outside of the company.

I have inherited a new server. SBS2003. It’s configured and working fine, however, I can’t figure out how to get to the owa! I put in mail.domainname.com/exchange and nothing comes back. The owa is working because it can connect to it internally. The problem I have is I can’t confirm that mail.domainname.com is the correct address set in Exchange.
What am I missing? I have setup exchange server times with no issues so this is really stumping me. I am not sure what the prior tech did. How do I confirm that going to mail.domainname.com/exchange is the correct address?
jmahlmannAsked:
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Suliman Abu KharroubIT Consultant Commented:
then please telnet on port 80/443 from external machine

telnet external_ip_address 80

also, can you access owa by ip address ? if not then it seems to be a firewall forwarding issue. do you use ISA to publish owa, or another firewall ?
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jmahlmannAuthor Commented:
Also, I have the following ports open:

21
25
80
110
443
465
1425
1723
3389
8080
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Suliman Abu KharroubIT Consultant Commented:
do you have mail record on the external DNS zone ? is it points to your exchange public ip address ?

do you have a port forwarding ( 80 or 443) in your external firewall, if any ?
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jmahlmannAuthor Commented:
the external dns says mail.domainname.com and I have ports 80 and 443 open and pointing to the server.
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jmahlmannAuthor Commented:
I did a test and it says port 80 and 443 are closed. All the others are open and I configured it the same way! Okay..gotta call the firewall manufacturer.

Thanks.
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Suliman Abu KharroubIT Consultant Commented:
sometimes, ports 80/443 used for firewall management web access. you can change this.
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