.htaccess finding pages when it should 404 – why?

hey all,

here’s the bottom of my htacess file:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

RewriteCond %{HTTP_HOST} ^mydomain\.com [NC]
RewriteRule ^(.*) https://www.mydomain.com/$1 [R=301,L]

the problem is that even when i go to a page that SHOULD be a 404, wordpress is somehow doing a broad match on my request string and matching with a blog in wordpress that fits the pattern.

looking at .htaccess, i can’t see where i’m telling it to do this. maybe it’s not even happening in wordpress?

example: when i go to an obvious 404:

https://www.mydomain.com/m

this is the URL that loads:

https://www.mydomain.com/managing-your-lettings-agent-part-i/

another example:

https://www.mydomain.com/can

loads

https://www.mydomain.com/can-you-really-afford-to-build-a-portfolio-without-direction/

i’m at a loss! can anyone help?

cheers

sarah