Email notifications stopped working

FYI from Kirk Trachy

Root Cause:

A configuration error prevented about 10% of customer e-mails from being routed to our e-mail service provider.  We had already automated the implementation of that particular configuration to avoid issues like this but some legacy mis-configuration existed that we had missed.  That mis-configuration has been corrected.  We will also be implementing improved monitoring, both to detect this specific case and to refine the monitoring and alerting we have in place to detect when anomalous e-mail volume occurs, either too much or too little.