Credentials problem

[Eric Vantroeyen]

Hello,

I have written an asp.net application which collects some messages from Exchange Server 2003 in a public folder, using WebDav protocol.

When I run it on my machine, the interaction with Exchange works well, but when I deploy the application on an other server of our intranet, i can't reach the Exchange Server public folder, DefaultCredentials doesn't seem to transfert proper informations.

On my web server, user authenticate with windows authentication, and anonymous is disabled. Also on the Exchange Server anonymous is disabled.

OWA is installed and works prerfectly.

Does anyone have a solution, or an idea of my problem

Regards

[M. Zeeshan Mustafa]

Hi Eric,

> but when I deploy the application on an other server of our intranet, i
> can't reach the Exchange Server public folder,

I believe that the authenticated user (or the impersonated user)
does not have permissions to access Exchange Server.

What do you think?
--
Hope this helps,
Zeeshan Mustafa, MCSD


"Eric Vantroeyen" <EricVantroeyen@discussions.microsoft.com> wrote in
message news:5736DEBE-6E9E-4CCE-A615-8C10189709AE@microsoft.com...

> Hello,
>
> I have written an asp.net application which collects some messages from

Exchange Server 2003 in a public folder, using WebDav protocol.

>
> When I run it on my machine, the interaction with Exchange works well, but

when I deploy the application on an other server of our intranet, i can't
reach the Exchange Server public folder, DefaultCredentials doesn't seem to
transfert proper informations.

>
> On my web server, user authenticate with windows authentication, and

anonymous is disabled. Also on the Exchange Server anonymous is disabled.

>
> OWA is installed and works prerfectly.
>
> Does anyone have a solution, or an idea of my problem
>
> Regards

[Joe Kaplan \(MVP - ADSI\)]

My guess is that this is a Kerberos delegation problem. If you use
Integrated authentication, you get an impersonation token on the IIS side.
This type of token will not hop to another machine on the network unless
Keberos delegation is enabled.

DefaultCredentials takes advantage of the underlying security system and
would have this exact problem.

I'd suggest reading up on Kerberos delegation to see what you can learn
about it.

Joe K.

"Eric Vantroeyen" <EricVantroeyen@discussions.microsoft.com> wrote in
message news:5BBBC001-41D7-476E-83DC-D5F1D8562296@microsoft.com...

> Hi,
>
> in fact the authenticated user as access to the server.
>
> When I test the access from my machine, or from the web server in both

case I use the same account. In one case it works ... but the client and the
server is on the same machine, that's the only difference.

>
> Regards
>
> "M. Zeeshan Mustafa" wrote:
>

> > Hi Eric,
> >

> > > but when I deploy the application on an other server of our intranet,

i

> > > can't reach the Exchange Server public folder,

> >
> > I believe that the authenticated user (or the impersonated user)
> > does not have permissions to access Exchange Server.
> >
> > What do you think?
> > --
> > Hope this helps,
> > Zeeshan Mustafa, MCSD
> >

>