Statement to Certificateholder

Distribution Information

Deal Information

1. Distribution Summary

Deal Name:

Residential Funding Mtg Sec I, 2007-S3

2. Factor Summary

Asset Type:

Mortgage Pass-Through Certificates

3. Components Information

(Not Applicable)

Closing Date:

03/29/2007

4. Interest Summary

First Distribution Date:

04/25/2007

5. Other Income Detail

(Not Applicable)

Determination Date:

05/23/2007

6. Interest Shortfalls, Compensation and Expenses

Distribution Date:

05/25/2007

Record Date:

7. Prepayment Interest and Basis Risk/Net WAC Shortfall Amounts

(Not Applicable)

Book-Entry:

04/30/2007

8. Collateral Summary

Definitive:

04/30/2007

9. Repurchase Information

10. Loan Status Report (Delinquencies)

Trustee:

Us Bank, Inc.

11. Deal Delinquencies (30 Day Buckets)

Main Telephone:

651-495-7000

12. Loss Mitigation and Servicing Modifications

GMAC-RFC

13. Losses and Recoveries

Bond Administrator:

Rona Hsu

14. Credit Enhancement Report

(Not Applicable)

Telephone:

818-260-1508

15. Distribution Percentages

Pool(s) :

40506,40507

16. Overcollateralization Summary

(Not Applicable)

17. Excess Cash Flow, Overcollateralization
Provisions and Derivative Amounts

(Not Applicable)

18. Performance Tests

19. Lender Paid Mortgage Insurance

(Not Applicable)

20. Comments

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 1 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



	1. Distribution Summary

			Class	CUSIP			Original Face Value			Beginning Notional / Principal Balance		Pass - Through Rate					Principal Distribution				Interest Distribution			Total Distribution (3) + (4) = (5)			Principal Loss			Interest Loss		Deferred Interest			Ending Notional/ Principal Balance (1)-(3)-(6)+(8)=(9)





										(1)		(2)			(3)					(4)					(5)		(6)		(7)				(8)			(9)

I-A-1				74958BAG7	405,294,000.00				402,355,778.54				6.00000000			5,216,113.18			2,011,778.89				7,227,892.07			0.00		0.00			0.00			397,139,665.36


I-A-2				74958BAH5	28,115,000.00				28,115,000.00				6.00000000			0.00			140,575.00				140,575.00			0.00		0.00			0.00			28,115,000.00

								1			1																										1
I-A-3				74958BAJ1	4,002,083.33				4,002,083.33				6.00000000			0.00			20,010.42				20,010.42			0.00		0.00			0.00			4,002,083.33



I-A-4				74958BAK8	20,000,000.00				20,000,000.00				6.00000000			0.00			100,000.00				100,000.00			0.00		0.00			0.00			20,000,000.00


I-A-5				74958BAL6	25,000,000.00				25,000,000.00				5.50000000			0.00			114,583.33				114,583.33			0.00		0.00			0.00			25,000,000.00


I-A-6				74958BAM4	23,025,000.00				23,025,000.00				5.50000000			0.00			105,531.25				105,531.25			0.00		0.00			0.00			23,025,000.00


II-A-1				74958BAQ5	49,949,000.00				48,504,839.66				5.50000000			725,933.47			222,313.85				948,247.32			0.00		0.00			0.00			47,778,906.19


I-A-P				74958BAR3	3,517,434.31				3,511,910.98				0.00000000			8,253.86			0.00				8,253.86			0.00		0.00			0.00			3,503,657.12

								1			1																										1
I-A-V				74958BAS1	523,266,851.96				520,311,522.13				0.11666629			0.00			50,585.68				50,585.68			0.00		0.00			0.00			515,075,887.11



II-A-P				74958BAT9	248,670.64				247,403.39				0.00000000			1,277.85			0.00				1,277.85			0.00		0.00			0.00			246,125.54

								1			1																										1
II-A-V				74958BAU6	52,019,393.73				50,567,385.34				0.35523403			0.00			14,969.38				14,969.38			0.00		0.00			0.00			49,833,045.41



R-I				74958BAV4	100.00				0.00				6.00000000			0.00			0.00				0.00			0.00		0.00			0.00			0.00


R-II				74958BAW2	100.00				0.00				6.00000000			0.00			0.00				0.00			0.00		0.00			0.00			0.00


R-III				74958BAX0	100.00				0.00				6.00000000			0.00			0.00				0.00			0.00		0.00			0.00			0.00


M-1				74958BAA0	10,932,200.00				10,922,500.72				5.95488979			9,987.43			54,201.91				64,189.34			0.00		0.00			0.00			10,912,513.29


M-2				74958BAB8	3,451,700.00				3,448,637.58				5.95488979			3,153.40			17,113.55				20,266.95			0.00		0.00			0.00			3,445,484.18


M-3				74958BAC6	2,301,200.00				2,299,158.33				5.95488979			2,102.33			11,409.36				13,511.69			0.00		0.00			0.00			2,297,056.00


B-1				74958BAD4	1,150,500.00				1,149,479.25				5.95488979			1,051.07			5,704.19				6,755.26			0.00		0.00			0.00			1,148,428.18


B-2				74958BAE2	1,150,600.00				1,149,579.16				5.95488979			1,051.16			5,704.68				6,755.84			0.00		0.00			0.00			1,148,528.00


B-3				74958BAF9	1,150,640.74				1,149,619.87				5.95488979			1,051.20			5,704.88				6,756.08			0.00		0.00			0.00			1,148,568.67


		Deal Totals				575,286,245.69			570,878,907.48					5,969,974.95				2,880,186.37				8,850,161.32				0.00		0.00			0.00			564,908,932.53

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 2 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007


	1.Notional Balance



2. Factor Summary
Amount /Original Amount per $1000 unit)

	Class	CUSIP		Beginning Notional/ Principal Balance Factor	Principal Distribution Factor	Interest Distribution Factor	Total Distribution Factor		Deferred Interest Factor	Interest Shortfall Factor	Ending Notional/ Principal Balance Factor




	I-A-1	74958BAG7	992.75039487		12.86994917	4.96375197		17.83370114	0.00000000	0.00000000	979.88044570

	I-A-2	74958BAH5	1,000.00000000		0.00000000	5.00000000		5.00000000	0.00000000	0.00000000	1,000.00000000

	I-A-3	74958BAJ1	1,000.00000000		0.00000000	5.00000084		5.00000084	0.00000000	0.00000000	1,000.00000000

	I-A-4	74958BAK8	1,000.00000000		0.00000000	5.00000000		5.00000000	0.00000000	0.00000000	1,000.00000000

	I-A-5	74958BAL6	1,000.00000000		0.00000000	4.58333320		4.58333320	0.00000000	0.00000000	1,000.00000000

	I-A-6	74958BAM4	1,000.00000000		0.00000000	4.58333333		4.58333333	0.00000000	0.00000000	1,000.00000000

	II-A-1	74958BAQ5	971.08730225		14.53349356	4.45081683		18.98431040	0.00000000	0.00000000	956.55380868

	I-A-P	74958BAR3	998.42972760		2.34655697	0.00000000		2.34655697	0.00000000	0.00000000	996.08317063

	I-A-V	74958BAS1	994.35215547		0.00000000	0.09667282		0.09667282	0.00000000	0.00000000	984.34648627

	II-A-P	74958BAT9	994.90390180		5.13872486	0.00000000		5.13872486	0.00000000	0.00000000	989.76517694

	II-A-V	74958BAU6	972.08717200		0.00000000	0.28776537		0.28776537	0.00000000	0.00000000	957.97051516

	R-I	74958BAV4	0.00000000		0.00000000	0.00000000		0.00000000	0.00000000	0.00000000	0.00000000

	R-II	74958BAW2	0.00000000		0.00000000	0.00000000		0.00000000	0.00000000	0.00000000	0.00000000

	R-III	74958BAX0	0.00000000		0.00000000	0.00000000		0.00000000	0.00000000	0.00000000	0.00000000

	M-1	74958BAA0	999.11277876		0.91357915	4.95800571		5.87158486	0.00000000	0.00000000	998.19919961

	M-2	74958BAB8	999.11277921		0.91357882	4.95800620		5.87158502	0.00000000	0.00000000	998.19920039

	M-3	74958BAC6	999.11278029		0.91357987	4.95800452		5.87158439	0.00000000	0.00000000	998.19920042

	B-1	74958BAD4	999.11277705		0.91357671	4.95800956		5.87158627	0.00000000	0.00000000	998.19920035

	B-2	74958BAE2	999.11277594		0.91357553	4.95800452		5.87158005	0.00000000	0.00000000	998.19920042

	B-3	74958BAF9	999.11278128		0.91357794	4.95800279		5.87158073	0.00000000	0.00000000	998.19920334



	Deal Factor :			98.19614787%


	Group I Factor :			98.43464863%


	Group II Factor :			95.79705152%

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 3 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



4. Interest Summary
The following section only reports information for classes that have accrued interest for this distribution.

Class		Accrual Period			Accrual Methodology	Beginning Notional/Principal Balance			Pass- Through Rate	Optimal Interest		Interest Loss			Deferred Interest		Interest Shortfall Amount		Other Income		Interest Distribution (1)-(2)-(3)- (4)+(5)=(6)		Accrued Certificate Interest Remaining Unpaid






		Start		End							(1)		(2)			(3)		(4)		(5)		(6)
I-A-1	04/01/2007		04/30/2007		30/360		402,355,778.54		6.00000000	2,011,778.89		0.00		0.00			0.00		0.00		2,011,778.89		0.00

I-A-2	04/01/2007		04/30/2007		30/360		28,115,000.00		6.00000000	140,575.00		0.00		0.00			0.00		0.00		140,575.00		0.00

I-A-3	04/01/2007		04/30/2007		30/360		4,002,083.33	1	6.00000000	20,010.42		0.00		0.00			0.00		0.00		20,010.42		0.00


I-A-4	04/01/2007		04/30/2007		30/360		20,000,000.00		6.00000000	100,000.00		0.00		0.00			0.00		0.00		100,000.00		0.00

I-A-5	04/01/2007		04/30/2007		30/360		25,000,000.00		5.50000000	114,583.33		0.00		0.00			0.00		0.00		114,583.33		0.00

I-A-6	04/01/2007		04/30/2007		30/360		23,025,000.00		5.50000000	105,531.25		0.00		0.00			0.00		0.00		105,531.25		0.00

II-A-1	04/01/2007		04/30/2007		30/360		48,504,839.66		5.50000000	222,313.85		0.00		0.00			0.00		0.00		222,313.85		0.00

I-A-V	04/01/2007		04/30/2007		30/360		520,311,522.13	1	0.11666629	50,585.68		0.00		0.00			0.00		0.00		50,585.68		0.00


II-A-V	04/01/2007		04/30/2007		30/360		50,567,385.34	1	0.35523403	14,969.38		0.00		0.00			0.00		0.00		14,969.38		0.00


M-1	04/01/2007		04/30/2007		30/360		10,922,500.72		5.95488979	54,201.91		0.00		0.00			0.00		0.00		54,201.91		0.00

M-2	04/01/2007		04/30/2007		30/360		3,448,637.58		5.95488979	17,113.55		0.00		0.00			0.00		0.00		17,113.55		0.00

M-3	04/01/2007		04/30/2007		30/360		2,299,158.33		5.95488979	11,409.36		0.00		0.00			0.00		0.00		11,409.36		0.00

B-1	04/01/2007		04/30/2007		30/360		1,149,479.25		5.95488979	5,704.19		0.00		0.00			0.00		0.00		5,704.19		0.00

B-2	04/01/2007		04/30/2007		30/360		1,149,579.16		5.95488979	5,704.68		0.00		0.00			0.00		0.00		5,704.68		0.00

B-3	04/01/2007		04/30/2007		30/360		1,149,619.87		5.95488979	5,704.88		0.00		0.00			0.00		0.00		5,704.88		0.00

Deal Totals						567,119,593.11				2,880,186.37		0.00		0.00			0.00		0.00		2,880,186.37		0.00



1.Notional Balance

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 4 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007


6. Interest Shortfalls, Compensation and Expenses

			Current Prepayment Interest Shortfall Amount		Compensating Interest			Net Prepayment Interest Shortfall Amount (1) - (2)=(3)		Civil Relief Act	Civil Relief Act	Compensation				Advances			Allowable Expenses per	Non - Recoverable Advances





			(1)			(2)			(3)			Subservicer		Master		Subservicer		Master



	Group I	4,919.66		4,919.66			0.00			0	0.00		109,233.72		24,734.80		32,456.66	0.00	0.00	0.00

	Group II	2,576.81		2,576.81			0.00			0	0.00		10,423.34		3,204.44		4,125.44	0.00	0.00	0.00

	Deal Totals	7,496.47		7,496.47			0.00			0	0.00		119,657.06		27,939.24		36,582.10	0.00	0.00	0.00

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 5 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



8. Collateral Summary

A. Loan Count and Balances

								Original Loan Count/ Scheduled Principal Balance							Beginning Loan Count/ Scheduled Principal Balance						Scheduled Principal			Curtailments					Payoffs					Matured Loans		Repurchases			Beginning Aggregate Scheduled Principal Balance of Liquidations/ Charge-offs					Ending Loan Count/Scheduled Principal Balance




			Count								1,090					1,086			N/A						192						7				0			0				0				1,079
		Group I


			Balance/Amount				523,266,851.96							520,311,522.13					320,485.15							660,941.73				4,254,208.14				N/A			0.00		0.00						515,075,887.11



			Count								101					100			N/A						30						0				0			0				0				100
		Group II


			Balance/Amount				52,019,393.73							50,567,385.34					198,884.48							535,455.45				0.00				N/A			0.00		0.00						49,833,045.41



		Deal Totals	Count							1,191							1,186				N/A				222				7					0		0					0						1,179


			Balance/Amount			575,286,245.69							570,878,907.47							519,369.63					1,196,397.18				4,254,208.14					N/A		0.00				0.00			564,908,932.52




B. Weighted Averages

			Beginning Weighted Average Gross Mortgage Rate	Ending Weighted Average Gross Mortgage Rate					Ending Weighted Average Remaining Amortization Term			Ending Weighted Average Months to Maturity						Beginning Weighted Average Net Mortgage					Ending Weighted Average Net Mortgage		Beginning Weighted Average Unmodified Net Mortgage			Net Weighted Average Cap Rate				Weighted Average Net Rate

		Group I
			6.38884425	6.38552970					356.91			355.75						6.07616851					6.07299553		6.07616851			N/A					N/A

		Group II
			6.15436813	6.15500150					168.46			168.46						5.82832505					5.82899785		5.82832505			N/A					N/A

		Deal Totals
			6.36807479	6.36519382					340.28			339.23						6.05421500					6.05147145		6.05421500			N/A					N/A



C. Constant Prepayment Rate

			1 Month CPR		3 Month CPR							6 Month CPR										12 Month CPR					Life CPR


	Group-I		10.77%																								8.36%

	Group-II		12.04%																								19.12%

	Deal Totals		10.88%																								9.37%

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 6 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



9. Repurchases

			Breaches Of Representations			ARM Conversions		Optional Repurchases of Defaulted Loans		Others		Total (1)+(2)+(3)+(4)=(5)
				(1)	(2)		(3)			(4)		(5)
		Count				0			0		0		0
				0


	Group I
		Scheduled Balance		0.00		0.00			0.00		0.00			0.00


		Count				0			0		0		0
				0


	Group II
		Scheduled Balance		0.00		0.00			0.00		0.00			0.00



		Count		0		0			0		0		0
	Deal Totals


		Scheduled Balance		0.00		0.00			0.00		0.00		0.00

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 7 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007


10. Loan Status Report
													Delinquency Calculation Method: Mortgage Bankers Association

					Current / Delinquent																	Bankruptcy								Foreclosure								REO																Total
	Deal Totals

		Count								Scheduled Balance					Count				Scheduled Balance				Count				Scheduled Balance					Count			Scheduled Balance				Actual Balance						Count								Scheduled Balance

	Current						1,167				559,108,080.80				0			0.00								0			0.00				0				0.00							0.00						1,167		559,108,080.80

	30 days					12					5,800,851.72				0			0.00								0			0.00				0				0.00							0.00						12		5,800,851.72

	60 days					0					0.00				0			0.00								0			0.00				0				0.00							0.00						0		0.00

	90 days					0					0.00				0			0.00								0			0.00				0				0.00							0.00						0		0.00

	120 days					0					0.00				0			0.00								0			0.00				0				0.00							0.00						0		0.00

	150 days					0					0.00				0			0.00								0			0.00				0				0.00							0.00						0		0.00

	180 days					0					0.00				0			0.00								0			0.00				0				0.00							0.00						0		0.00

	181+ days					0					0.00				0			0.00								0			0.00				0				0.00							0.00						0		0.00

	Total							1,179			564,908,932.52				0		0.00								0			0.00			0					0.00					0.00						1,179				564,908,932.52


	Current			98.98%								98.97%			0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%								98.98%		98.97%

	30 days					1.02%					1.03%				0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%							1.02%			1.03%

	60 days					0.00%					0.00%				0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%							0.00%			0.00%

	90 days					0.00%					0.00%				0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%							0.00%			0.00%

	120 days					0.00%					0.00%				0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%							0.00%			0.00%

	150 days					0.00%					0.00%				0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%							0.00%			0.00%

	180 days					0.00%					0.00%				0.00%						0.00%				0.00%				0.00%				0.00%		0.00%							0.00%						0.00%				0.00%

	181+ days					0.00%					0.00%				0.00%					0.00%					0.00%				0.00%				0.00%		0.00%								0.00%						0.00%			0.00%

	Total		100.00%						100.00%					0.00%		0.00%								0.00%				0.00%			0.00%			0.00%						0.00%						100.00%					100.00%

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 8 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



			Current / Delinquent											Bankruptcy						Foreclosure					REO											Total
Group I

	Count						Scheduled Balance							Count			Scheduled Balance	Count				Scheduled Balance					Count			Scheduled Balance	Actual Balance				Count					Scheduled Balance


Current						1,068						509,761,453.31		0		0.00					0			0.00				0		0.00			0.00					1,068			509,761,453.31

30 days					11					5,314,433.80			0			0.00					0			0.00				0		0.00			0.00					11			5,314,433.80

60 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

90 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

120 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

150 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

180 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

181+ days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

Total					1,079					515,075,887.11			0			0.00				0				0.00				0		0.00				0.00				1,079			515,075,887.11


Current				98.98%				98.97%						0.00%		0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				98.98%			98.97%

30 days				1.02%							1.03%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				1.02%				1.03%

60 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

90 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

120 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

150 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

180 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

181+ days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

Total		100.00%							100.00%				0.00%		0.00%				0.00%				0.00%			0.00%			0.00%			0.00%					100.00%		100.00%

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 9 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



			Current / Delinquent											Bankruptcy						Foreclosure					REO											Total
Group II

	Count						Scheduled Balance							Count			Scheduled Balance	Count				Scheduled Balance					Count			Scheduled Balance	Actual Balance				Count					Scheduled Balance


Current						99						49,346,627.49		0		0.00					0			0.00				0		0.00			0.00					99			49,346,627.49

30 days					1					486,417.92			0			0.00					0			0.00				0		0.00			0.00					1			486,417.92

60 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

90 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

120 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

150 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

180 days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

181+ days					0					0.00			0			0.00					0			0.00				0		0.00			0.00					0			0.00

Total					100					49,833,045.41			0			0.00				0				0.00				0		0.00				0.00				100			49,833,045.41


Current				99.00%				99.02%						0.00%		0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				99.00%			99.02%

30 days				1.00%							0.98%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				1.00%				0.98%

60 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

90 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

120 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

150 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

180 days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

181+ days				0.00%							0.00%		0.00%			0.00%				0.00%				0.00%				0.00%		0.00%				0.00%				0.00%		0.00%

Total		100.00%							100.00%				0.00%		0.00%				0.00%				0.00%			0.00%			0.00%			0.00%					100.00%		100.00%

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 10 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



11. Delinquency Data

			Totals				Totals					Totals					Totals					Totals
		Count % Count		Balance % Balance		Count % Count		Balance % Balance			Count % Count		Balance % Balance			Count % Count		Balance % Balance			Count % Count		Balance % Balance

			12	5,800,851.72			0		0.00			0		0.00			0		0.00			0		0.00
	1 Month				13 Months					25 Months					37 Months					49 Months


			1.02%	1.03%			0.00%	0.00%				0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	2 Months				14 Months					26 Months					38 Months					50 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	3 Months				15 Months					27 Months					39 Months					51 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	4 Months				16 Months					28 Months					40 Months					52 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	5 Months				17 Months					29 Months					41 Months					53 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	6 Months				18 Months					30 Months					42 Months					54 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%

			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	7 Months				19 Months					31 Months					43 Months					55 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%

																	0		0.00
			0	0.00			0		0.00			0		0.00								0		0.00

	8 Months				20 Months					32 Months					44 Months					56 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	9 Months				21 Months					33 Months					45 Months					57 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%


			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	10 Months				22 Months					34 Months					46 Months					58 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%

														0.00					0.00
			0	0.00			0		0.00			0					0					0		0.00

	11 Months				23 Months					35 Months					47 Months					59 Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%

			0	0.00			0		0.00			0		0.00			0		0.00			0		0.00
	12 Months				24 Months					36 Months					48 Months					60+ Months


			0.00%	0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%			0.00%		0.00%

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 11 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



12. Loss Mitigation and Servicing Modifications


			Current			1 Payment			2 Payments				3+ Payments				Foreclosure				REO		Total

		Modification Type	Count		Scheduled Balance	Count		Scheduled Balance	Count			Scheduled Balance	Count		Scheduled Balance		Count	Scheduled Balance			Count	Scheduled Balance	Count	Scheduled Balance


Group I		Capitalizations	0		0.00	0		0.00		0		0.00		0		0.00	0		0.00	0		0.00	0	0.00


		Other Modifications	0		0.00	0		0.00		0		0.00		0		0.00	0		0.00	0		0.00	0	0.00



Group II		Capitalizations	0		0.00	0		0.00		0		0.00		0		0.00	0		0.00	0		0.00	0	0.00


		Other Modifications	0		0.00	0		0.00		0		0.00		0		0.00	0		0.00	0		0.00	0	0.00



		Capitalizations		0	0.00		0	0.00			0	0.00		0		0.00	0		0.00	0		0.00	0	0.00

	Deal Totals
		Other
				0	0.00		0	0.00			0	0.00		0		0.00	0		0.00	0		0.00	0	0.00



				Payoffs										Repurchases					Liquidations													Total

		Current Month					Cumulative						Current Month			Cumulative			Current Month				Cumulative								Current Month						Cumulative
Modification Type

		Count			Scheduled Balance		Count		Scheduled Balance			Count			Scheduled Balance	Count	Scheduled Balance	Count		Scheduled Balance			Count		Scheduled Balance					Count					Scheduled Balance		Count		Scheduled Balance


Group I	Capitalizations		0		0.00		0			0.00			0		0.00	0	0.00	0		0.00			0				0.00			0					0.00		0				0.00


	Other Modifications		0		0.00		0			0.00			0		0.00	0	0.00	0		0.00			0				0.00			0					0.00		0		0.00



Group II	Capitalizations		0		0.00		0			0.00			0		0.00	0	0.00	0		0.00			0				0.00			0					0.00		0				0.00


	Other Modifications		0		0.00		0			0.00			0		0.00	0	0.00	0		0.00			0				0.00			0					0.00		0		0.00



Deal Totals	Capitalizations		0		0.00		0			0.00			0		0.00	0	0.00	0		0.00		0				0.00			0					0.00		0				0.00


	Other Modifications

		0		0.00		0		0.00			0			0.00	0	0.00	0		0.00		0			0.00				0					0.00		0			0.00

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 12 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



13. Losses and Recoveries
A. Current Cycle Realized Losses

			Current Period Realized Losses		Liquidations					Charge-Offs					Servicing Modifications						Bankruptcy Losses	Total

		Loss Count			0								0					0			0				0


	Group I		Beginning Aggregate Scheduled Balance		0.00								0.00						0.00		0.00				0


		Principal Portion of Loss					0.00							0.00						0.00	0.00					0.00



		Interest Portion of Loss						0.00						0.00						0.00	0.00					0.00


		Total Realized Loss		0.00								0.00					0.00				0.00	0.00


		Loss Count			0								0					0			0				0


	Group II		Beginning Aggregate Scheduled Balance		0.00								0.00						0.00		0.00				0


		Principal Portion of Loss					0.00							0.00						0.00	0.00					0.00



		Interest Portion of Loss						0.00						0.00						0.00	0.00					0.00


		Total Realized Loss		0.00								0.00					0.00				0.00	0.00


		Loss Count							0				0					0			0						0


		Beginning Aggregate Scheduled Balance							0.00				0.00					0.00			0.00						0.00
	Deal Totals



		Principal Portion of Loss							0.00				0.00					0.00			0.00						0.00


		Interest Portion of Loss						0.00					0.00					0.00			0.00						0.00


		Total Realized Loss					0.00				0.00					0.00					0.00			0.00


B. Cumulative Realized Losses

			Cumulative Realized Losses		Liquidations					Charge-Offs					Servicing Modifications						Bankruptcy Losses	Total


	Group I	Loss Count			0								0					0			0				0


		Total Realized Loss				0.00								0.00						0.00	0.00					0.00



	Group II	Loss Count			0								0					0			0				0


		Total Realized Loss				0.00								0.00						0.00	0.00					0.00



	Deal Totals	Loss Count					0						0					0			0		0


		Total Realized Loss				0.00							0.00					0.00			0.00		0.00

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 13 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



C. Subsequent Recoveries

				Subsequent Recoveries	Current Period								Cumulative


			Subsequent Recoveries Count				0			0
		Group I
			Subsequent Recoveries					0.00			0.00


			Net Loss 1					0.00				0.00


			Net Loss % 2						0.00%					0.00%


			Subsequent Recoveries Count				0			0
		Group II
			Subsequent Recoveries					0.00			0.00


			Net Loss 1					0.00				0.00


			Net Loss % 2						0.00%					0.00%


			Subsequent Recoveries Count					0		0


			Subsequent Recoveries					0.00		0.00
		Deal Totals


			Net Loss 1					0.00		0.00



			Net Loss % 2			0.00%				0.00%

	1 Total Realized Loss less Subsequent Recoveries
	2 Net Loss % of Original Balance

D. Default Percentages

Default Loss Percentage

1 Month

3 Months

6 Months

12 Months

Life of Deal

Group

Monthly Default Rate

0.00%

Constant Default Rate

0.00%

Group

Monthly Default Rate

0.00%

Constant Default Rate

0.00%

Monthly Default Rate

0.00%

Deal Totals

Constant Default Rate

0.00%

1-Month MDR (Current Month) = SUM(Beginning Scheduled balances of liquidating loans) / [SUM(Beginning Scheduled loan balances)- SUM(Scheduled Principal payments)]
m-Month = 3, 6, 12, months or the life of deal to date
m-Month MDR(over m months in period where n is current month)= 1-[(1-MDRn-m+1) * (1-MDRn-m+2) *.* (1-MDR n-1) * (1-MDRn)]^(1/m)
CDRm = 1- [(1- MDRm)^12],where m is number of months in period

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 14 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007

E. Special Hazard, Fraud Loss, and Bankruptcy

Special Hazard Amount

Fraud Loss Amount

Bankruptcy Amount

Deal Totals

5,752,862.00

17,258,587.00

149,118.00



15. Distribution Percentages


		Beginning Current Super		Beginning Current	Beginning Current		Beginning Current Senior

	I	0.00000000%		0.00000000%	96.45823406%	100.00000000%



	II	0.00000000%		0.00000000%	96.39280021%	100.00000000%



		Ending Percentage

	M-1		1.92596074%

	M-2		0.60809706%

	M-3		0.40540979%

	Class M Total:		2.93946759%


	B-1		0.20268728%

	B-2		0.20270489%

	B-3		0.20271207%

	Class B Total:		0.60810424%


	Ending Percentage uses Beginning Certificate Principal Balance

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 15 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007


18. Performance Tests


	Current Distribution Date >= Target Distribution

		Current Distribution Date >= Target Distribution Date	False

	Current Senior Pct > Initial Senior Percent

		Current Senior Percentage > Original Senior Percentage	False

	60+ Dlq Avg Loan Balance / Subordinate Balance

		Dlq Average Loan Balance / Class M and B balance Test	True

	60+ Dlq Avg Loan Balance <= 2% of Pool Balance

		Dlq Average Loan Balance Test	True

	Sub Balance Test OR 2% Delinquency Test

		Dlq Balance Test	True

	Aggregate Realized Loss Pct < Scheduled Loss Pct

		Aggregate Realized Loss Test	True

	Sr. Accel. % Trigger - 1st Trigger Event

		1st Senior Accelerated Stepdown Test	True

	60+ Dlq Avg Loan Balance <= 4% of Avg Pool Balance

		2nd 60+ Delinquent Average Loan Balance Test	True

	Aggregate Realized Loss Pct < Scheduled Loss Pct

		Aggregate Realized Loss Percentage < 2nd Scheduled Loss Percentage	True

	Sr. Accel. % Trigger - 2nd Trigger Event

		2nd Senior Accelerated Stepdown Test	True

	60+ Delinq Balance OR Aggregate Loss Test

		1st or 2nd Sr. Accel Stepdown Test	True

	Senior Accelerated Stepdown Date and Trigger Event

		Senior Accelerated Stepdown Trigger in effect?	False

	M-2, M-3, B-1, B-2, B-3 BegBal/PoolBal

		Class M-2 Prepayment Distribution Trigger	False

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 16 of 17

Statement to Certificateholder

Residential Funding Mtg Sec I, 2007-S3

May 25, 2007



M-3, B-1, B-2, B-3 BegBal/PoolBal

	Class M-3 Prepayment Distribution Trigger	False

B-1, B-2, B-3 BegBal/PoolBal

	Class B-1 Prepayment Distribution Trigger	False

B-2, B-3 BegBal/PoolBal

	Class B-2 Prepayment Distribution Trigger	False

B-3 BegBal/PoolBal

	Class B-3 Prepayment Distribution Trigger	False



20. Comments

	Comments:	Credit Support Depletion Date has not occurred


	ERISA Text:		Each beneficial owner of any Certificate (or any interest therein) which provides credit enhancement for any other Certificate and is available in book-entry form, including any such

			Class M Certificate, shall be deemed to have represented, by virtue of its acquisition or holding of such Certificate (or interest therein), that either: a) it is not an employee benefit
			or other plan subject to the prohibited transaction provision of the Employee Retirement Income Security Act of 1974, as amended('ERISA'), or Section 4975 of the Internal Revenue
			Code of 1986, as amended (a 'Plan'), or any other person (including an investment manager, a named fiduciary or a trustee of any Plan) acting, directly or indirectly, on behalf of
			purchasing any Certificate with 'plan assets' of any Plan; or b) (i) the transferee is an insurance company, (ii) the source of funds to be used by it to purchase the Certificates is an
			'insurance company general account' (within the meaning of Department of Labor Prohibited Transaction Class Exemption ('PTCE') 95-60), and (iii) the conditions set forth in
			Section I and III of PTCE 95-60 have been satisfied. Any purported beneficial owner of any such book-entry Certificate (or interest therein) to whom either (a) or (b) above does not
			apply shall indemnify and hold harmless the Company, the Trustee, the Master Servicer, any Subservicer, and the Trust Fund from and against any and all liabilities, claim, cost or
			expenses incurred by such parties as a result of its acquisition or holding of such Certificate.

05/29/2007

1:09:48PM

Residential Funding Company, LLC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors

Page 17 of 17



	Statement To Certificateholder



	Residential Asset Mortgage Products, 2007-S3

	May 25, 2007



	Cash Flow Received and Uses of Funds


	Cash Flow Received		Amount

	Principal and Interest Payments		8,870,604.10
	Prepayment Premium		0.00
	Liquidation and Insurance Proceeds		0.00
	Subsequent Recoveries		0.00
	Repurchase Proceeds		0.00
	Other Deposits/Adjustments (including Derivative Payment)		7,496.47
	Total Deposits		8,878,100.57

	Uses of Funds		Amount

	Transfer to Certificate Account		8,850,161.32
	Reimbursed Advances and Expenses		0.00
	Master Servicing Compensation		27,939.25
	Derivative Payment		0.00
	Total Withdrawals		8,878,100.57

	Ending Balance		0.00



		GMAC-RFC, 2255 North Ontario Street, Suite 400, Burbank, CA 91504, 818.260.1400, www.gmacrfc.com/investors	Appendix A

RFMSI Series 2007-S3 Trust 10-D