Thanks for posting in our newsgroup.
From your description, I know that when you create user account in ADUC,
the new mailboxes cannot be used until after 24 hours. If that's not right,
please don't hesitate to let know.
Please let me know the following to make the situation more clearly:
1. What important change did you made before the problem first occurred?
2. What's your Exchange Service Pack level?
3. What error message can you see when the new user logs on OWA?
Based on my research, please take the following steps to see if the problem
can be resolved:
Step 1: Please create a new user with SBS Add User wizard, will the same
You can create the user manually from dsa.msc, but is recommended to use
Add User wizard because this will create the following setting:
Creating Home Folder
Adding the user to some security groups and distribution groups.
Adding the user to SharePoint role
Setting disk quota
To do this:
1. Open Server Management and then go to User node.
2. Click Add a User and then click Next.
3. Input Username and then click Next.
4. Input Password and then click Next.
5. Select a User Temp and then click Next.
6. Click Finish.
Then test if the new mailbox is useable.
Step 2: I had a same case before, the problem was resolved after Service
Pack 1 for Exchange 2003 was installed.
If you didn't have Service Pack 1 for Exchange 2003, please install by
click the following link:
You can also install Exchange 2003 SP2:
Exchange Server 2003 Service Pack 2
Exchange Server 2003 SP2 Overview
Step 3: Please check whether the email address has been stamped to the new
To do so:
1. Start ADUC.
2. Click View Menu in the ADUC interface, and select Advanced Features.
3. Locate to the user and open its Properties.
4. On the Email Addresses tab, verify if the Email addresses are listed.
If the problematic user has no email address, please manually update the
RUS service. The Recipient Update Service (RUS) creates and maintains
attribute values in Active Directory. To run an update or a rebuild
operation, use the following steps:
1. Click Start, point to Programs, point to Microsoft Exchange, and then
click System Manager.
2. Expand the Recipients object, and then click the Recipient Update
3. Right-click the Recipient Update Service instance that you want to
configure, and then click Update Now.
Step 4: Please check if the user is listed in GAL from Exchange server
side. To do so:
1. Start Exchange System Manager (ESM).
2. Navigate to Default Global Address List, and open its Properties.
3. On the General tab, click the Preview button. Check if the new user is
listed or not.
If the problem persists, please help me collect the following information
for further research:
15706/MPSRPT_Exchange.EXE to download the file.
2. Run the MPSRPT_Exchange.EXE on the server box.
3. Wait for 10~15 minutes.
4. Open Windows explorer, navigate to %