PluginImpl.java

package hudson.tasks;

import hudson.Plugin;

import java.util.Arrays;

public class PluginImpl extends Plugin {
    static {
        // Fix JENKINS-9006
        // When sending to multiple recipients, send to valid recipients even if some are
        // invalid, unless we have explicitly said otherwise.
        for (String property : Arrays.asList("mail.smtp.sendpartial", "mail.smtps.sendpartial")) {
            if (System.getProperty(property) == null) {
                System.setProperty(property, "true");
            }
        }
    }
}