Re: Outlook 2000 issue with EXCH 2003

It seems like to the problem related to NTLM authentication. The DC at the
site doesn't seems like authenticating with client with NTLM ... And
solution?
"Elton Seng Yan Thung" <sengy01@xxxxxxxxxxxx> wrote in message
news:uPvKSlnNGHA.3272@xxxxxxxxxxxxxxxxxxxxxxx
yeah, no permission error. I suspect it is something gotta do with
Authentication method. Because no problem with outlook 2003. I been
wondering what is the different in term of authentication between outlook
2k and 2k3...


"Nuevo" <imaneophyte@xxxxxxxxx> wrote in message
news:uqB4EsiNGHA.740@xxxxxxxxxxxxxxxxxxxxxxx
Looking at the permissions of the mailboxes which accounts have mailbox
rights? Are you certain that nothing else happened at the same that this
GP change was made? It seems unlikely that never expiring a password
would cause logon failures.

Nue
"Elton Seng Yan Thung" <sengy01@xxxxxxxxxxxx> wrote in message
news:e0HJRiiNGHA.2560@xxxxxxxxxxxxxxxxxxxxxxx
Dear all,
Has anybody have this problem below

A site has been migrated to Windows 2003 AD, Exch 5.5 was killed off.
Users
of the domain has email enabled and mailbox store at EXCH 2k3 of parent
domain with different name space (it is a tree domain of parent domain).
Outlook client is 2000 version, client os is XP pro.

After AD migration and exchange mailbox created successully, it was fine
for
1 month. Subsequently one of the domain admin of the site changed policy
that enable all users password never expired, all users are not able to
login to mailbox with error message of " The logon credentials supplied
were
incorrect. Make sure username and domain are correct then type your
password" During the happening, users have no problem loginin to domain
with their XP.

We had tried
1) Delete and recreate profile, check registry with microsoft
recommended
method, check AD, no problem with GC, no problem with AD sync. Uninstall
Anti virus on all DC. However no help.
2) We have also check, other site have no problem, creating profile of
other
site\domain in the same problematic PCs is ok.
3) Users with Outlook 2k3 has no this issue at all.

At the moment, we have installed outlook 2k3 for users as many as we
can.
However their are NT4 workstation that can't install outlook 2k3. Thus
the
solution is not ultimate.

Wish to get some hints, experience and solution from you who has come
accross this problem.

thanks for your help first









.

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