site.sitemap-other-host
The site's sitemaps list URLs on other hosts. Google accepts them only for hosts verified in Search Console or whose own robots.txt names the sitemap.
What to change
List each host's URLs in a sitemap that host's robots.txt names. If the URLs use another domain by mistake (a staging or old domain), generate them from the production site URL.
The documentation on developers.google.comA finding of this rule on a page carries the exact edits for that page: the markup it quotes, and what to write instead.
When it runs
Runs on a crawl or a build directory. Info is a best practice: worth doing, rarely urgent, and --no-info leaves it out. Each finding takes 1 point off the page's score.
The severity here is the rule's usual one: a finding can be raised or lowered when the page gives a reason.
Run it, or skip it
Check a page for this rule alone, after a fix for instance:
npx @rivi-software/agentic-seo-check crawl https://example.com --rule site.sitemap-other-host
Or from an assistant, with the MCP tool seo_crawl_site:
{
"url": "https://example.com",
"rules": [
"site.sitemap-other-host"
]
}
To leave it out of an audit, pass --disable site.sitemap-other-host on the command, or disableRules: ["site.sitemap-other-host"] to a tool.
More in Site-wide checks
All 49 rules- Warning
site.sitemap-lastmod-invalidSitemap <lastmod> values are not in W3C Datetime format, so search engines ignore them. - Info
site.sitemap-lastmod-futureSitemap <lastmod> values lie in the future. Google uses lastmod only when it is consistently accurate. - Info
site.sitemap-lastmod-missingA sitemap lists URLs but gives none of them a <lastmod>, so search engines cannot tell which pages changed. Bing calls lastmod a key signal for what to crawl again; Google uses it when it is consistently accurate. - Info
site.sitemap-lastmod-uniformEvery URL of a sitemap of 10 or more has the same <lastmod> date and time, which is the time the sitemap was built rather than when each page changed. Bing asks sites not to set lastmod to the sitemap's build time, and Google ignores lastmod values that are not accurate. - Error
site.sitemap-noindex-pageThe sitemap lists pages that are set to noindex. - Warning
site.sitemap-non-canonicalThe sitemap lists URLs whose canonical points to a different URL. - Error
site.sitemap-broken-urlThe sitemap lists URLs that return 4xx/5xx. - Warning
site.sitemap-redirecting-urlThe sitemap lists URLs that redirect.