Credit:
The site is producing an error message saying "This webpage is not available" and "Error 501 (net::ERR_INSECURE_RESPONSE): Unknown error." Some users have taken to Twitter to complain: "Yahoo Mail is not letting me log in. That's probably its way of saying 'Stop using Yahoo Mail.,'" reads a tweet from @pensexperienceM. "WTF is wrong with #Yahoo mail?" asks @LisaPampuch.
"Some Yahoo services are currently inaccessible to some users in certain locations," reads a statement from the company provided to Mashable. "We are working to correct the issue and restore all functionality immediately. We know that this may have caused some inconvenience and we apologize to our users who might be affected."