Exchange 2007 Outlook Web Access from outside

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 .
Anestis PsomasSystem and Network AdministratorAsked:
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Khurram Ullah KhanCommented:
Have you published CAS via ISA? if yes then follow below link to check if it is published properly or not,

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.

Following is the link mentioning CAS in DMZ is not supported by MS
AkhaterSolutions ArchitectCommented:
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 ?
Anestis PsomasSystem and Network AdministratorAuthor Commented:
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 If i try from inside it works perfect.

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AkhaterSolutions ArchitectCommented:
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
Anestis PsomasSystem and Network AdministratorAuthor Commented:
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
AkhaterSolutions ArchitectCommented:
ok another option you can do is try to access it from outside and then go to your IIS logs and check them

Anestis PsomasSystem and Network AdministratorAuthor Commented:
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
AkhaterSolutions ArchitectCommented:
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
Anestis PsomasSystem and Network AdministratorAuthor Commented:
Try to open    please
After a little i get this
AkhaterSolutions ArchitectCommented:
well if this is what is happening then your port forwarding is done wrong you should forward 443 to 443

it looks like 80 is forwarding to 25

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Anestis PsomasSystem and Network AdministratorAuthor Commented:
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...
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