Question

Double authentification problem with OWA

Asked by: JasonBigham

NOTE: I am not budgeted to purchase the enterprise version and implement a true front-end server in the DMZ. Thus, I use the terms "front-end" and "back-end" loosely.

          Internet          VPN
               |                 |
               |                 |
           ****Firewall****
               |                 |
             DMZ <----------
               |
           ROUTER
               |
               |
     Internal Network (Win 2000)
(3 EX2000 servers housing mailboxes)
(1 EX2000 server acting as a SMTP gateway*)
(*used as the "front-end" thru the router for SMTP and initial OWA request)

I can get OWA to work, but not without having to authenticate twice (unless I go directly to the NAT associated to my mailbox) <-- not user friendly

DNS in the DMZ is setup so that the 4 NAT entries reference the 4 exchange servers. This allows resolution when the "front-end" redirects the user to their home server. User comes in via the VPN, then goes to owa.domain.com which send them to the "front-end" server and they authenticate. That server says your mailbox isn't here (no mailboxes will be housed here), but I'll send you to where it is. Then they have to authenticate again to the actual box that holds their mailbox.

A URL pointing directly to the mailbox of the user only requires one login, but expecting users to know that they are owa1.domain.com, owa2.domain.com, owa3.domain.com is not preferred.

DMZ is still NT4, thus NT4 DNS and IIS.

Basically, why can't I get the referring "front-end" server to forward the authentification information to the "back-end" server? Or better yet, how can I given my budget restraints... if it is at all possible?

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Asked On
2003-10-09 at 10:27:33ID20762122
Tags

owa

,

login

,

double

,

end

Topic

Exchange Email Server

Participating Experts
1
Points
85
Comments
2

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Answers

 

by: VahikPosted on 2003-10-09 at 19:11:26ID: 9524932

Jasonbigham without the enterprise edition u have the best solution.
Either u have to  pay for upgrade or train ur users.

 

by: JasonBighamPosted on 2003-10-14 at 08:51:07ID: 9548004

As I suspected.

Thanks

20120131-EE-VQP-002

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