Missing required email to field – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” missing required email to field ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “missing required email [to] field”classname  is Account.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

// applying the defaults on missing emails fields
 email = config.defaults.apply(email); 
 if (email.to == null) {
 throw new SettingsException("missing required email [to] field");
 Transport transport = session.getTransport(SMTP_PROTOCOL); 
 String user = auth != null ? auth.user() : config.smtp.user;


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