Alias /.well-known/acme-challenge /var/www/letsencrypt/.well-known/acme-challenge/

Alias /.well-known/acme-challenge/ /var/www/letsencrypt/.well-known/acme-challenge/

#Bypass Auth
<Directory /var/www/letsencrypt/.well-known/acme-challenge/>
Satisfy any
</Directory>

#Redirect before other rewrite rules
RewriteCond %{REQUEST_URI} /.well-known/acme-challenge/
RewriteRule (.*) /.well-known/acme-challenge/$1 [L,QSA]

<If "%{HTTP_HOST} != 'acme.mydomain.tld'">
    RedirectMatch "^/.well-known/(.*)$" "http://acme.mydomain.tld/.well-known/$1"
</If>