A problem affecting the global DOI (Digital Object Identifier) resolution system, provided by the dx.doi.org service has now been resolved.
An issue arose yesterday (20 January 2015) which meant that requests to the DOI HTTP resolver at dx.doi.org (for example for a clickable version of a DOI such as http://dx.doi.org/10.1016/j.pscychresns.2015.01.013) were not been routed through to the current destination URL for that DOI. Instead, users were directed to a generic error page for the dx.doi.org. domain.
The issue has now been resolved, and requests to the dx.doi.org service are now being resolved normally. A detailed explanation for the outage has been published on the CrossTech blog.