create xml sitemap to be sent to google

Hello mitoste, in the past you had to use XMAP component and respective plugin.
You might have noticed, the original XMAP project is on hold... but there is a "fork" called OSmap by Alledia/Joomlashack.

• OSmap (free download link is send by mail, might take a while!)
• Xmap and Cobalt plugin

You should be able to install and use the older Xmap plugin. As far as I know, it still works.
Hence the other plugin group name: You have to clear the OSmap plugin search filter or search for "map" to see it. Then publish and configure it.