Problems with 301 redirect functions and wordpress multisite htaccess code

Hi, I have some problems with wordpress multisite htaccess code to redirections some old domain and old url.

This htaccess tester http://htaccess.madewithlove.be/ return me some error:

<IfModule mod_rewrite.c>
2 	  	RewriteEngine On
3 	  	RewriteBase /
4 	  	RewriteRule ^index\.php$ - [L]
5 	  	# uploaded files
6 	  	RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]
7 	  	# add a trailing slash to /wp-admin
8 	  	RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
9
10 	  	RewriteCond %{REQUEST_FILENAME} -f [OR] 	This variable is not supported: %{REQUEST_FILENAME}
11 	  	RewriteCond %{REQUEST_FILENAME} -d 	This variable is not supported: %{REQUEST_FILENAME}
12 	  	RewriteRule ^ - [L] 	This rule was not met because one of the conditions was not met
13 	  	RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
14 	  	RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
15 	  	RewriteRule . index.php [L] 	This rule was met, the new url is http://inonda.tv/index.php
The tests are stopped because the L in your RewriteRule options
16 	  	</IfModule>
17
18 	  	<IfModule mod_security.c>
19 	  	SecFilterEngine on
20 	  	SecFilterScanPOST on
21 	  	</IfModule>
22
23 	  	RewriteCond %{HTTP_HOST} ^otranto\.inonda\.le\.it$ [OR]
24 	  	RewriteCond %{HTTP_HOST} ^www\.otranto\.inonda\.le\.it$
25 	  	RewriteRule ^/?$ "http\:\/\/vacanze\.inonda\.tv\/" [R=301,L]
26
27 	  	RewriteCond %{HTTP_HOST} ^inonda\.le\.it$ [OR]
28 	  	RewriteCond %{HTTP_HOST} ^www\.inonda\.le\.it$
29 	  	RewriteRule ^/?$ "http\:\/\/inonda\.tv" [R=301,L]
30
31 	  	RewriteCond %{HTTP_HOST} ^inonda\.eu$ [OR]
32 	  	RewriteCond %{HTTP_HOST} ^www\.inonda\.eu$
33 	  	RewriteRule ^/?$ "http\:\/\/inonda\.tv" [R=301,L]

And when I digit an redirected url it send me in this link: http://inonda.tv/wp-signup.php?new=inonda.le.it (in this case I have digit inonda.le.it) and I have this message:

Il sito che stavi cercando, http://inondaleit.inonda.tv/, non esiste.

But if I put on top of my htaccess the RewriteCond and the RewriteRule all old main domain have a correct redirection, but if I click an old post url, it redirect me to the wp-signup page.. to redirect all permalink I have used permalink finder plugin and all worked fine before 4.0 version. Now, if I deactivate permalink finder, all old link is redirect to wp-signup page….. and the error is in the htaccess wordpress multisite code. But what is the error? What should I do?