How to fix error: Login failed for user?

[SantyBhi]

Hi ,
...i am developing web Site in asp.Net.
When i Run Web Site using Visual studio i dont get the error.it works fine ...But When i run WebSite by publishing on IIS .i am getting the following error.
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ERROR:
Login failed for user 'TEGASYSIND\TEGADEV3$'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'TEGASYSIND\TEGADEV3$'.
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...i have Data Base on Other Computer Names As TEGASYSIND\TEGADEV4.
My Computers Name is TEGASYSIND\TEGADEV3.

[Frinavale]

Is the web server, that you published your website to, on the same network as the computer that you were using to develop the website on?

If not, then you need to specify the IP address of the computer hosting the database instead of using the computer's name. When you use the computer's name, this name is resolved into it's IP address by the network. So, if your web server is on a different network, then the name will not resolve and the computer hosting the database will not be found.

-Frinny