How to deal with 404, Not Found Error?

[jmsmrtn98]

Hello Everybody,
Please tell me how I can deal with 404 errors. I have more than 600 Not Found errors in one of my blogs. Now what should I do? I do not think redirecting so many pages individually make any sense. How can I handle bulk errors using robot.txt. Please help me if you have fixed the error earlier.
Thanks

[williamluke1]

i think this this because of robot.txt file.i think your are not manage ie well.Go to the wcvalidator and check which page give you that error and resolve it....