OWA for dummies

Allo xperts,

I have recently inherited a network and I'm having trouble getting OWA to work externally.  Exchange server 2k3.
When I go to http://internalservername/exchange the logon dialogue pops right up.

When I try it from the outside, unable to connect.

We have a barracuda box to filter spam, so all port 25 traffic goes there  I have mail.mydomain.com pointing there also.
I've tried port forwarding all 80 traffic to the exchange server, but it doesn't work so I must be doing something wrong.  I think it is a DNS problem, but I don't know how to sort that out yet.

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hankerinAsked:
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SembeeCommented:
First - check whether OWA works internally? Once you have confirmed that, then reconfigure your router so that the admin interface is disabled to the Internet and the port forwarding is allowed through.

As for the path not being found, it can do that sometimes. What path is it trying to use? Does the path actually exist (if you look through Windows Explorer for example).

Simon.
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hankerinAuthor Commented:
Added 150 points as a noob balance.  I need to know what all is necessary (what I need to tell my hosting company as far as zone records and such, where I need to point ports in the router config)  basically how to keep my wonderful barracuda box and have OWA.
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SembeeCommented:
At most you need two ports - 80 (http) and 443 (https).
Those ports should be pointed at your Exchange server's IP address if you are using NAT.

Simon.
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hankerinAuthor Commented:
So I can just point everything at my router and use port forwarding to sort it all out?
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hankerinAuthor Commented:
hmmm I think I've almost got it but an exciting new problem has started.  When I go to mail.mydomain.com externally it prompts me to enter a password for level 15 access.  I assume this means that instead of going to OWA, it thinks i'm trying to access the router.  

How can I make OWA supercede this configuration page?  Should I make OWA work on a different site?

+100 points!  You can do it Sembee!
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hankerinAuthor Commented:
Hmmm also when I check the IIS manager, under default web site, exadmin, exchange, exchange-oma and public all say that the system cannot find the path specified.  Is this normal or is this indicitive of my issues?
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hankerinAuthor Commented:
ahhh the key was the admin interface, and for the record the command was:

no ip http server

300 points to Gryffindor!

We can tackle the path not found error in another question Sembee!
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