You can find broken external links easily with Ryte using filters. Given the many filter and customization options of the Ryte reports in Website Success there are actually multiple ways to go about this. Here is one using the Link Status Code report:
Navigate to Website Success > “Links” > “Status Codes”. Using the filters, add the filters “[Target] Group is different host” and “[Target] Status Code (Group) is 4xx” to the report. This way, the report only shows those links that refer to a broken page.
Tip: To add the “[Target] Status Code (Group) is 4xx” filter you can also just click on the graphic showing the number of 4xx URLs found.