American Capital Strategies has invested more than $39 million in the buyout of eLynx Ltd., one of the leading providers of secure electronic document delivery solutions to several large mortgage lenders. eLynx serves over 100 customers, including six of the top 10 and 16 of the top 30 mortgage lenders. Top customers include Wells Fargo Home Mortgage, National City Mortgage, Golden West Financial, GreenPoint, HSBC Mortgage and Ditech.com, according to a company spokeswoman. …