Please upload exim-4.69-51 for Cygwin 1.7. It is compiled with IPv6 enabled, but this has not been fully tested on Cygwin. http://mysite.verizon.net/phumblet/exim-4.69-51/exim-4.69-51.tar.bz2 http://mysite.verizon.net/phumblet/exim-4.69-51/exim-4.69-51-src.tar.bz2 http://mysite.verizon.net/phumblet/exim-4.69-51/setup.hint Thanks Pierre