Outlook Web Acces on sub domain

[davetherave100]

We have our exchange server published, and external Outlook web Access works fine.
What we have now is some users who have been set up with a sub domain email address. This works ok for normal mail, internal and external, but when we come to log into OWA, a connection cannot be made. If we change this users email back to the main domain name it lets it in.
The email server is published through ISA server, and i have added destination sets for the sub domain.
Any ideas what im missing?, if it can work in the way im trying!
Thanks

 

[DarkHat]

I will tell you what we do here....

I don't know if it's appropriate for your situation...

When we received the login window, you have to type the user domain.

user: yourdomain\username
password: **********

It was not like that in NT environment, since we migrate to AD and we change the domain extention we have to do that...

I hope this can help in your situation

 

[davetherave100]

Thanks for the response.
Dont think that is our problem though.
We have to put domain\username accessing owa from the outside world,(on XP) but internally it just authenticate automatically.
Also i just tried a user with an email of user@subdomain.domain and even internally the authentication box pops up, change the email to user@domain and youre straight in!
Im wondering if owa does work from a sub domain?