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OWA not working after changes on public IP address

Posted on 2013-11-26
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Last Modified: 2013-11-26
Hi There,

The network setup is:

Technicolor router (public IP)
Draytek Router (WAN2-DZM)
Windows 2008 R2 (single domain, GC, DNS, DHCP, Exchange 2010)

The draytek was the original router and everything was working fine inside and outside the network.

By mistake the ADSL connection on Draytek was terminated and we have to use the technicolor box instead. The Draytek is connected to Technicolor LAN3 port and setup as DZM.

Since the public IP has changed, I have amended the mx records with the new IP public IP of technicolor.

MX webmail.domain.com

I've used MX Tools website to test the MX record above and it seems to be fine.

I have also amended the A records to new IP address:

webmail.domain.com  public IP
autodiscover.domain.com public IP

From inside and outside the network I can reach the OWA page, but after entering the correct credentials I receive the following error:

HTTP 500 internal server error

Is there a problem with the certificate or am I missing some ports to open/forward between routers?

Thanks,
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Question by:Rod_2012
6 Comments
 
LVL 9

Accepted Solution

by:
Mahesh Sharma earned 500 total points
ID: 39677196
Do you get the error from both inside & outside network?

Check this: http://www.msexchange.org/blogs/walther/news/exchange-2010-sp1-experiecing-an-owa-http-500-error-554.html

Have you tried accessing owa virtual directory from the IIS manager in the sever itself?
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Expert Comment

by:cwiese1
ID: 39677215
Try using  https://testconnectivity.microsoft.com/

This should help where the break is at. Good luck.
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LVL 36

Expert Comment

by:Mahesh
ID: 39677219
On exchange CAS server check if iis form based authentication service is stopped

http://www.msexchange.org/blogs/walther/news/exchange-2010-sp1-experiecing-an-owa-http-500-error-554.html

Mahesh
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Author Comment

by:Rod_2012
ID: 39677222
yes the error was from inside & outside network.

I rebooted the server without joy.

Looked at your link.

Yes the service Microsoft Exchange Forms-Based Authentication was down, manually started and BINGO I can log on from inside and outside the network.

But if I hit 'New Message' another error is displayed.

HTTP Status Code: 500


Thanks.
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LVL 9

Expert Comment

by:Mahesh Sharma
ID: 39677234
From inside or outside?

If from inside, go to individual CAS server, Open IIS Manager, Naviagte to OWA Virtual directory & browse to see the results
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Author Closing Comment

by:Rod_2012
ID: 39677252
all working thank you very much
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