Domain change: redirect 301 with htaccess does not work

Question

I transferred my website from olddomain.de to newdomain.de and wanted to redirect every page of the old website to the new website (e.g. olddomain.de/contact -> newdomain.de/contact). When I enter the main page of the old website in the browser, I am redirected correctly but all other pages are not redirected.

I tried a lot of different redirect options and currently this one is implemented (the first IfModule already existed):

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine on 
RewriteRule ^(.*)$ http://www.newdomain.de/$1 [R=301,L]
</IfModule>

# END WordPress

Does anyone know how to correct the .htaccess file, so that all pages of the website are being redirected?

EDIT:

I managed to get all sites redirected by putting some code at the top of the IfModule like this

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} ^olddomain.de$ [OR]
RewriteCond %{HTTP_HOST} ^www.olddomain.de$
RewriteRule (.*)$ http://newdomain.de/$1 [R=301,L]

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Since this is working fine now, I wanted to change the address in the google search console but it says that the 301 redirection is not working. Does anyone have any suggestions here?

Answer 1

since your old site is not serving a WordPress instance anymore try removing the first part of your .htaccess file (you don't need it and may be causing the issue.

So let it just like this:

<IfModule mod_rewrite.c>
RewriteEngine on 
RewriteRule ^(.*)$ http://www.newdomain.de/$1 [R=301,L]
</IfModule>