Please forgive my ignorance!

I have managed to set sitemap generator up on my html sites without any problems however on my php sites I encounter the following message;

An error occurred: There was an error while retrieving the URL specified@
http://www.xxx.com
Error message:Error opening socket to www.xxx.com
HTTP headers follow:

HTTP output:

Does sitemap generator it work with PHP scripted sites?
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?
Oleg Ignatiuk
www.xml-sitemaps.com
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For maximum exposure and traffic for your web site check out our additional SEO Services.
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?
Oleg Ignatiuk
www.xml-sitemaps.com
Send me a Private Message

For maximum exposure and traffic for your web site check out our additional SEO Services.
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?

If there was a config/port issue why does my site with html pages work, all my sites are on my shared server?

Thanks for any help.
I have just tried to install it on another of my html sites and got the same error - I have emailed my server host for advice on what you have stated above.  ???
Hello,

ok, let's see what your host replies.
Oleg Ignatiuk
www.xml-sitemaps.com
Send me a Private Message

For maximum exposure and traffic for your web site check out our additional SEO Services.