I have a wp mu 3.6.1 with domain mapping (0.5.4.3) with w3tc (0.9.3) and Google XML Sitemaps (4.0 BETA).

I have 4 different sitemaps.

sub-1.com/sitemap.xml

sub-2.com/sitemap.xml

sub-3.com/sitemap.xml

sub-4.com/sitemap.xml

on google webmaster i got 59 errors & 14 warnings.

Sitemap errors>Errors:

We encountered an error while trying to access your Sitemap. Please ensure your Sitemap follows our guidelines and can be accessed at the location you provided and then resubmit.

General HTTP error: 404 not found

Sitemap: sub-2.com/sitemap-pt-post-2011-02.xml

etc

(but when i click on my sitemap links they work fine)

Sitemap errors>Warnings:

URLs not accessible When we tested a sample of the URLs from your Sitemap, we found that some URLs were not accessible to Googlebot due to an HTTP status error. All accessible URLs will still be submitted.

Sitemap: sub-2.com/sitemap-misc.xml

HTTP Error: 404

URL: /sitemap.html

(but when i click on my sitemap links they work fine)

Sitemap errors>Index errors

URLs not accessible When we tested a sample of the URLs from your Sitemap, we found that some URLs were not accessible to Googlebot due to an HTTP status error. All accessible URLs will still be submitted.

HTTP Error: 404

URL: /sitemap-pt-post-2010-09.xml

(but when i click on my sitemap links they work fine)

Web pages

3,276 Submitted

3,247 Indexed

what do I have to put on

network admin>performance(w3tc)>page cache>cache preload>Sitemap URL: ?

i have add "/sitemap.xml"

my robots.txt: http://pastebin.com/3K2U0mQa my .htaccess: http://pastebin.com/efJJ6zwy

How can I make it work right?