andipandi on "[Plugin: WordPress MU Domain Mapping] Cannot access main site anymore: mysite.com fails but mysite.com/wp-admin works"

Also, looking at the WP output (to the access log file) I see when using curl

x.x.x.x - - [22/Apr/2014:14:23:40 +0200] "GET / HTTP/1.1" 302 275 "-" "curl/7.30.0"
x.x.x.x - - [22/Apr/2014:14:24:04 +0200] "GET / HTTP/1.1" 200 8791 "-" "curl/7.30.0"

The 302 is the one from mydomain.com (not working), the 200 is the one from mydomain2.com.

When I use Firefox, I get

x.x.x.x - - [22/Apr/2014:14:33:43 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:43 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET / HTTP/1.1" 301 382 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET / HTTP/1.1" 301 382 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:44 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET / HTTP/1.1" 301 382 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET / HTTP/1.1" 301 382 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:45 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:46 +0200] "GET / HTTP/1.1" 301 382 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:46 +0200] "GET / HTTP/1.1" 302 320 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:46 +0200] "GET /wp-signup.php?new=www HTTP/1.1" 302 366 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:46 +0200] "GET / HTTP/1.1" 301 382 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"

and

x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET / HTTP/1.1" 200 2812 "-" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-content/themes/twentythirteen/fonts/genericons.css?ver=2.09 HTTP/1.1" 304 174 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-content/themes/twentythirteen/style.css?ver=2013-07-18 HTTP/1.1" 304 174 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-includes/js/jquery/jquery.js?ver=1.11.0 HTTP/1.1" 304 175 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-includes/js/jquery/jquery-migrate.min.js?ver=1.2.1 HTTP/1.1" 304 174 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-includes/js/masonry.min.js?ver=3.1.2 HTTP/1.1" 304 174 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-includes/js/jquery/jquery.masonry.min.js?ver=3.1.2 HTTP/1.1" 304 173 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
x.x.x.x - - [22/Apr/2014:14:33:14 +0200] "GET /wp-content/themes/twentythirteen/js/functions.js?ver=2013-07-18 HTTP/1.1" 304 173 "http://www.mysite2.com/" "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"