getting error in crawling website

[mukul]

Hi

can somebody help me, i have installed xml sitemap generator according to given instructions but it is giving error when i trying to crawl the website. the error is like

"
An error occured: There was an error while retrieving the URL specified: [external links are visible to admins only]
Error message: Error opening socket to [external links are visible to admins only]
HTTP headers follow:

HTTP output:
"

Give me solutions how can i rectify this error.

[XML-Sitemaps Support]

Hello,

Probably there is a configuration problem - it looks like your server doesn't allow local network connections via port 80 (http) - as a result sitemap generator is not able to crawl the site. This is usually related to firewall installed at the host - could you please contact your hosting support regarding this?