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The trailing dot in domain names matter
While inspecting traffic logs for my website in redirection.io recently, I noticed several requests logged on the lacot.org. domain name. Did you see the final trailing dot in the hostname? I first thought…
In other words, a customer on this local network who would type "http://admin.finance" in their web browser would be redirected to the service hosted on the machine with the hostname admin.finance.example.com. But this might be technically incorrect, and would left users that are on a local network with a search domain setup unable to reach the real website (with the example above, a request to http://admin.finance. So, to summarize the risks associated with an improper handling of trailing dots in domain names, you could face potential costs, security, SEO, and user experience issues.
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