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Anestis Psomas

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Exchange 2007 Outlook Web Access from outside

Hi!
I have a server with windows server 2008 that runs exchange 2007 . I have enable outlook web access that works normally inside my network. If i try to access from outside after i port forward all the necessary ports nothing happens. It wont open. Any guide or step by step solution to make it run ? I thing that it wants more than port forward to play .
Thanks
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Khurram Ullah Khan
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Have you published CAS via ISA? if yes then follow below link to check if it is published properly or not,

http://khurramullah.wordpress.com/2009/07/06/publishing-exchange-2007-owa-via-isa-2006-reverse-proxy/

Please note that CAS in DMZ is not supported by Microsoft but still if you need to publish then following is the article mentioning ports required for CAS.

http://technet.microsoft.com/en-us/library/bb331973.aspx

Following is the link mentioning CAS in DMZ is not supported by MS
http://support.microsoft.com/kb/270836
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We need more info to be able to help

1) When you say port forward I guess you have a firewall and not an ISA/TMG server am I right ? did you pick a fix public IP on that firewall and port forwarded all 443 requests to the internal IP of you exchange server ?

2) How many Exchange servers do you have ?

3) what is the error message you are receiving ?
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Anestis Psomas

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Hello.
I dont have an isa / tmg server. I have a router with a static public IP.  I have already port forward the 443 port to the internal ip of the exchange server.

I have one exchange server

I dont receive a specific error message. I try to open the owa from outside and i see in firefox in the status bar that says " connected 213.x.x.x " and nothing happens.

My internal ip is 10.102.2.131. If i try https://10.102.2.131/owa from inside it works perfect.


Thank you for the info


do you have any monitoring tool on you firewall ? can you make sure packet are reaching the firewall and being forwarded to the exchange
Its a new installation and i have only the very basic working.  I dont have a monitoring tool. How i can check this ?
Thanks a lot
ok another option you can do is try to access it from outside and then go to your IIS logs and check them

I try it but i thing that nothing in my logs tells me that i try to access from outside....
I try also to open my page without https.

I try http://213.x.x.x/owa and the response that i take is

220 EXCHANGE.alphavision.local Microsoft ESMTP MAIL Service ready at Mon, 19 Apr 2010 13:10:33 +0300
500 5.3.3 Unrecognized command
500 5.3.3 Unrecognized command
500 5.3.3 Unrecognized command
500 5.3.3 Unrecognized command
500 5.3.3 Unrecognized command
421 4.7.0 Too many errors on this connection, closing transmission channel
i am sorry ? where did you get this from ? this is an smtp communication happening on port 25 and not 443

please send me a screenshot
Try to open http://mail.alphavision.gr/owa    please
After a little i get this
ASKER CERTIFIED SOLUTION
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Akhater
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This is very strange. i will look again my router settings and i will come back . Thanks
as akhater says, it looks lik you have PAT (port address transalation) and are forwarding to port 80 to port 25 which is wrong...