Credit Suisse First Boston Mortgage Securities Corp. & DLJ Mortgage Capital, Inc. Pooling and Servicing Agreement.

Credit Suisse First Boston Mortgage Securities Corp. and DLJ Mortgage Capital, Inc. have entered into a pooling and servicing agreement with Wells Fargo Bank, N.A., Washington Mutual Mortgage Securities Corp., Fairbanks Capital Corp., Greenpoint Mortgage Funding, Inc., Wilshire Credit Corporation, and U.S. Bank National Association. The agreement relates to mortgage-backed pass-through certificates, Series 2004-AR6, and covers the conveyance of mortgage loans, acceptance by the trustee, and representations and warranties of the sellers, master servicer, and servicers.