asked on

401 Unauthorized OWA External Access Error

I am currently able to access our Exchange 2003 SP2/ OWA/ IIS6.0 services internally on our network. No problems there.

I cannot access OWA externally using "mail.domainname.com/exchange" I get a 401 Unauthorized error. I do not get prompted for a Username and password, however. This is very confusing seeing as how I am able to access internally. FYI, I have followed KB articles http://support.microsoft.com/kb/293386 and http://support.microsoft.com/kb/327843. The first KB article got my error from "Error: Access Denied" to "401 Unauthorized"

Any help is greatly appreciated! Thank you.

Sembee

When you are prompted for a username and password, what do you enter?

username
password

domain\username
password

something else?

Simon.

AnthonyP9618

Are you accessing OWA through an ISA server or directly on the FE?

metricroofing

ASKER

I do not receive a login prompt, it seems to give me this error right away.

I am accessing it through a firewall but not an ISA Server. Ports 80 and 443 have been allowed via NAT to the private IP of the exchange server.

Thank you

ASKER CERTIFIED SOLUTION

Sembee

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

metricroofing

ASKER

Sembee:

Correct, I have double checked these authorizations and all seems as it should. I did have one difference, the /exchange was set to Anonymous and Integrated. De-selecting Anonymous changes the error I get in the browser to "Error: Access Denied". Internally all still works as long as Integrated under /exchange is selected.

FYI, I've tried OWA Externally from Firefox 2.0, IE 6, IE 7 and Linux running Firefox 2.0. All the same error(s).

Thank you

SOLUTION

Sembee

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

metricroofing

ASKER

Sembee:

I have disabled anonymous access to the /exchange virtual directory. I still receive that error "Unauthorized" but there is one difference. The whole time I was using anonymouse.org to simulate an outside connection because I was in my local network. Apparently anonymouse.org does not support something because I tried connecting from home via mail.domainname.com/exchange and it worked! Although this is a peculiar problem, seemingly with just the external web browser test I was using, OWA seems to work on other PCs as well.

Thank you for your help and sorry if I wasted your time. You did help me confirm the correct settings though.