OUTLOOK EXPRESS - Logon using secure password authentication

Outlook Express 6
Exchange 5.5
Windows NT/Windows2000

I noticed the following today.

If you logon to the domain as userA, open outlook express, create a new profile/account  with a username of USERB and USERB's password.... and under the server section seelct "Logon using secure password authentication" as well as "My server requires authentication"

Then even if your profile was for USERB, userA's email is downloaded into the mailbox.

If you remove the check box from " Logon using secure password authentication" then everthing works as it should, with USERB receiving USERB's email.

If this how it is suppose to work?

it seems like asecurity issue to me.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

I think that is how it's supposed to work.

I found some info here:


"When a user tries to log on to Exchange Server with Outlook Express and
Secure Password Authentication, the client will pass the credentials of the
user logged on to the workstation. If the logon works using the Clear Text
option: <NT Domain/NT Account/Alias>, the user will have to change his or
her mailbox alias to the Windows NT account name in order to use Secure
Password Authentication. This is because Secure Password Authentication will
not pass the mailbox alias information. It defaults to <NT DOMAIN\NTACCOUNT>
and Exchange Server assumes the alias to be the Windows NT account."

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Email Software

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.