RE: Useing OWA internaly

  • From: "Sarfraz ahmed" <S.ahmed@xxxxxxxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 17 Aug 2005 17:24:38 +0100

Hello,

I need your help; regarding OWA it's working but internal but not work
over internet, 

http://192.168.0.1/exchange/user  so its work over internet but internal
but not works over the net, could you help me please


I am using static IP on router and I opened port 80 in my router,

Sarfraz Ahmed
Network&Epos Engineer
National Halal Food Group
www.nationalhalal.com 
Tel:00441217722700
Fax:0044121772252

-----Original Message-----
From: Chris Maher [mailto:cmaher@xxxxxxxxxx] 
Sent: 17 August 2005 02:45
To: [ExchangeList]
Subject: [exchangelist] RE: Useing OWA internaly

http://www.MSExchange.org/

Since I know relatively little about ISA 2004, I'm going to go out on a
limb here and make some assumptions (and hope it has nothing to do with
ISA).

Assumption #1: I assume you're using a non-public Domain naming scheme
for your company's Active Directory Domain (ie: Using xyzcorp.local
instead of xyzcorp.com?) or something similar.  You want to http:// to
mail.xyzcorp.com/exchange instead of mail.xyzcorp.local/exchange, right?

Assumption #2: If the above scenario is similar to what you've got,
you're probably using someone else to host public DNS for your company's
domain name (ie: Network Solutions is hosting DNS for xyzcorp.com) and,
of course, you've got a DNS server for Active Directory & xyzcorp.local.


If all of the above is correct, what I think you need to do is create a
forward lookup zone on your Active Directory DNS servers for your public
domain name.  That is, create a forward lookup zone on your Active
Directory DNS Servers for xyzcorp.com and add a corresponding A and MX
record for mail.xyzcorp.com to have the private IP address of your mail
server.  You could make the mail.xyzorp.com DNS record a CNAME for
mail.xyzcorp.local if you want.  

The main problem with this is that you have double-maintenance whenever
you need to change any DNS information to make sure your internal
xyzcorp.com DNS matches the zone information with whoever is hosting
your public DNS.

As for the RPC over HTTP question...the only ports you should need open
are tcp port 80 for http and if you want to use HTTPS, tcp port 443

Hope this helps.
--cm

-----Original Message-----
From: Falah [mailto:falah.ahmed@xxxxxxxxxxxx] 
Sent: Tuesday, August 16, 2005 7:48 PM
To: [ExchangeList]
Subject: [exchangelist] Useing OWA internaly

http://www.MSExchange.org/

Hi all,
Recently we have upgrade our exchange to exchange 2003, we ahve now
front
end and backend servers. most of our users useing OWA. If they use it
form
outside our LAN useing https://mail.xxx.yyy/exchange they can access it
without any problems, but if they try to use the same URL to access it
from our lan they can't reach it. I know that they can use the backend
server URL, but this is not idle selution coz it is going to confuse the
users, i want them to use one URL from both side
(https://mail.xxx.yyy/exchange) is that possible? we have ISA 2004 as
well.

As a second issue could u please let me know which ports do I have to
open
on pix firewall to use RPC over HTTP.

thanks
Falah

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