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SBS2008 OWA not working when external

Posted on 2013-11-19
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Last Modified: 2013-11-24
HI All

We recently changed the IP subnet, and since then we've lost connectivity to OWA remotely (externally).

We've checked Exchange, SBS console, IIS, certificate, DNS, everything, and nothing seem to work. Not sure what the problem is, but I would hope that someone could advise.

Thanks,
Goraek
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Question by:goraek
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Expert Comment

by:David Atkin
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Hello,

Have you changed the port redirections on your router to the new IP address of your server?

Run the fix my network wizard in the SBS Console to check for configuration issues.
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by:goraek
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Yeah I've done that.
I can jump on to OWA internally.
Fixed all issues in the SBS console, all seems to be working ok.
When I try it externally, I receive this:

File Not Found

The requested URL was not found on this server: /owa

Not sure what the problem is.
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Expert Comment

by:David Atkin
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Are you trying to connect to OWA using the same name that is on the certificate?
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by:goraek
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Yes, still no go.
We did change it internally to like mail.domain.com/owa
The certificate is sev.domain.com/owa.
mail and sev still points to the same public IP, but NAT to apporpiate server accordingly.
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by:David Atkin
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Did you change the external address as well or just the internal one?
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by:goraek
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Just the internal one.
External is still the same.
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by:David Atkin
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Can you access it on https externally?
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by:goraek
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Nope.. nothing at all.
I can access it internally thats the thing.
But externally it just doesnt let me do it.
Its so weird.
Checked all the telneting test, all came ok.
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Expert Comment

by:David Atkin
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Can you give me a scrrenshot of the internal and external urls on the OWA page under server configuraiton in exchange.

Have you restarted IIS since you changed the internal name?

If you use the internal name external, does it work?
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Expert Comment

by:JayCarter82
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When you changed the internal name, did you change the certificate? Has your external IP changed for any reason?
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by:goraek
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No I didnt change the certificate. No change to external IP.
Even if I revert everything back, the error still the same.... so I dont believe theres anything to do with that..
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by:JayCarter82
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But does the certificate cover the new internal address at all? Might not make a difference of course, but just best to keep things up to date.
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by:goraek
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Certificate doesnt have IP justs DNS
IM just worried that the SBS is broken.
When you try to load, it says File not found.
But internally it works fine??
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by:JayCarter82
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It really sounds like the port forwarding is not pointed to the server correctly, but if you've checked that then I am scratching my head a bit. Have you tried running the tools on the Microsoft RCA?
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by:goraek
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Found what the issue is, its the certificate.
Not sure why it was assigned to the firewall certificate.
How do we change this and bind to the right one?
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goraek earned 0 total points
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Its all fixed!
Found that our firewall was using SSL and HTTP!
Had to disable it - everything started to work again...
Thanks for you help anyway.
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Author Closing Comment

by:goraek
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Trial and error
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