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Forum Moderators: goodroi
I don't know all the details of your personal situation but I would speculate that it could be a good idea if you updated your sitemap every 1-2 weeks.
You could try a simple experiment. Don't update the sitemap and see if the content is indexed. That will let you know if you really need the sitemap or not.
BTW Goodroi can you tell me what are the file permissions for the file sitemap.xml and sitemap.xml.gz ?