301 redirect instead of 404 on internal pages

Hello!

I have following problem.

If instead of the correct address of our website http://gkvector.com, for example, http://gkvector.com/3543645 or http://gkvector.com/hgfjhgj that appears page 404 errors, as it should be. Everything’s fine.

If you go to any internal page of the website, say “Promo” http://gkvector.com/promo/, and dial an incorrect address, such as http://gkvector.com/promo/gfghfhf we are also all well, opens 404 page…

But when you enter an address with an incorrect address in the form of numbers, not letters, for example: http://gkvector.com/promo/54764578 301 redirects to running partition occur http://gkvector.com/promo/ instead of 404 pages….

That is, if the wrong address type “hfbdkfb” all is well, and when “67864353” – 404 not called… this problem is only on internal pages, on the main it is not.

.htaccess code:

# BEGIN WordPress

<IfModule mod_rewrite.c>
Options +FollowSymLinks -Indexes
RewriteRule ^index\.php$ — [L]
RewriteRule (.+)/feed /$1 [R=301,L]
RewriteRule (.+)/attachment /$1 [R=301,L]
RewriteRule (.+)/comment-page /$1 [R=301,L]
RewriteRule (.+)/comments /$1 [R=301,L]
RewriteRule (.+)/trackback /$1 [R=301,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

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