Error generating sitemap

[marfa]

I have generated several sitemaps with no problem.
But these two sites are giving me an error.

There was an error while the URL specified: [external links are visible to admins only]

There was an error while the URL specified: [external links are visible to admins only]
Please make sure to specify the correct website URL and resubmit your request.

Thanks

[xml-sitemaps]

Your server is blocking our site. When it goes to crawl it sees:

Forbidden
You don't have permission to access / on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

--------------------------------------------------------------------------------

Apache/1.3.36 Server at www.cyberprensa.com Port 80

[marfa]

I found that the .htaccess file was banning 85.0.0.0/8
Removing the line solved the problem.
Thank for the help.