Monday, October 31, 2011

OAB get prompting password

If you have enabled web-based publishing of your Offline Address Book (OAB) and your Outlook users get continuously prompted to enter their passwords, you need to check a couple of things:

Make sure Autodiscover is working perfectly before you made the OAB change.
Hold down the CTRL button and right click on the Outlook icon on the task bar, then select Test Email Autoconfiguration. Unselect GuessSmart and Secure GuessSmart and keep Use Autodiscover selected. On the Log tab, make sure Autodiscover is successful and that it was able to bind to an SCP.
Make sure that the entry is added to your certificate’s Subject Alernative Names list.
If you are facing problems with Autodiscover, you should correct that first before attempting the steps mentioned below.
Make sure that you have defined the External and Internal URLs for the OAB virtual directory in your client access server.

Once you have made sure that Autodiscover is working OK, and that the credentials are being prompted for the OAB URL (and not the mailbox server), you need to check the IIS Authentication setting on the client access server.

On the Client Access Server running Windows Server 2008, open IIS Manager console.
Click on Default Web Site
Open Authentication
Note that only Anonymous Authentication is enabled. All other authentication methods should be disabled.
Temporarily enable Windows Authentication
Right click on Windows Authentication and choose Advanced Settings
Uncheck Enable Kernel Mode Authentication and click OK
Disable Windows Authentication

OverAdvertisedSize; message size exceeds fixed maximum size

To use ADSI Edit to modify the global message size limits

1. If it is necessary, install the Microsoft Windows Support Tools. For detailed instructions, see Install Windows Support Tools.

2. Click Start, and then select Run. In the Open field, type C:\Program Files\Support Tools\Adsiedit.msc, and then click OK.

3. Open ADSI Edit, expand Configuration, and then expand CN=Configuration..., expand CN=Services, expand CN=Microsoft Exchange, expand CN=, and then select CN=Global Settings.

4. In the result pane, right-click CN=Message Delivery, and then select Properties.

5. In CN=Message Delivery Properties, select the Attribute Editor tab. In the Attributes section, locate the following attributes:
delivContLength This is the incoming message size limit that corresponds to the MaxReceiveSize parameter in the Set-TransportConfig cmdlet.
submissionContLength This is the receiving message size limit that corresponds to the MaxSendSize parameter in the Set-TransportConfig cmdlet.
msExchRecipLimit This is the maximum number of message recipients that corresponds to the MaxRecipientEnvelopeLimit parameter in the Set-TransportConfig cmdlet.

6. To modify an attribute, select the attribute, and then click Edit. We recommend that you set each global message size limit to match the value of the corresponding organization message size limit. In the Integer Attribute Editor, perform one of the following actions:
To remove the global message size limit, select Clear, and then click OK. The value of the attribute will be .
To enter value for a specific global message size limit, in the Value field, type the value, and then click OK. Valid input values are as follows:
delivContLength Valid input for this parameter is 0 to 2097151 KB. The default value is 10240 KB.
submissionContLength Valid input for this parameter is 0 to 2097151 KB. The default value is 10240 KB.
msExchRecipLimit Valid input for this parameter is 0 to 2147483647 recipients. The default value is 5000 recipients.

Repeat step 6 for each global message size limit that you want to modify.

7. To close CN=Message Delivery Properties, click OK and then click File, Exit to close ADSI Edit.