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Saturday, April 12, 2008

Outlook RPC over HTTP doesn't work with 3G or fast connection

When you are out of the office and using Outlook with RPC over HTTP to connect to your Corporate email, you may have to enable the “on fast network, connect using HTTP first, then connect using TCP/IP” on the Microsoft Exchange Proxy Settings.

You are using 3G USB modem that have speed up to 7.5 MB.(This is most likely not the true internet speed you get, but this what windows detected). Outlook will consider it as fast network. If the above option is not selected, outlook will automatically go with TCP/IP for connection. Your outlook would not be able to connect to the mail server.

However if you put the check mark on, Outlook will go for HTTP and it should be able to connect to the mail server.

Of course the consequence is that you will be prompt to enter your Windows account authentication all the time when you open Outlook whether inside or outside Petrosea Office.

Outlook determines a user's connection speed by checking the network adapter speed on the user's computer, as supplied by the operating system. Reported network adapter speeds of 128 KB or lower are defined as slow connections. There may be circumstances when the network adapter speed does not accurately reflect data throughput for users.

Saturday, April 5, 2008

A duplicate name exist error when connecting to SMB share using CNAME alias

When you are setting up CNAME alias in DNS for a Windows 2003 Server and then try to connect to server using CNAME alias, you may encounter "a duplicate name exists on the network" error.

To resolve this problem in Windows Server 2003, complete the following steps:
1. Create the CNAME record for the file server on the appropriate DNS server, if the CNAME record is not already present.
2. Apply the following registry change to the file server. To do so, follow these steps:
a. Start Registry Editor (Regedt32.exe).
b. Locate and click the following key in the registry:
c. On the Edit menu, click Add Value, and then add the following registry value:
Value name: DisableStrictNameCheckingData

Radix: Decimal
Value: 1
d. Quit Registry Editor.
3. Restart your computer.