This is my log4j.xml file where TO_ADDRESS is Environmental variable name. value="${env:TO_ADDRESS}" does not work for me.
<appender name="mailAppender" class="org.apache.log4j.net.SMTPAppender">
<param name="BufferSize" value="512" />
<param name="SMTPHost" value="smtp.gmail.com" />
<param name="SMTPPort" value="465" />
<param name="SMTPUsername" value="username" />
<param name="SMTPPassword" value="password" />
<param name="SMTPProtocol" value="smtps" />
<param name="From" value="fromAddress" />
<param name="To" value="${env:TO_ADDRESS}" />
<param name="Subject" value="HelloWorld" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="[%d{ISO8601}]%n%n%-5p%n%n%c%n%n%m%n%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="error" />
<param name="LevelMax" value="fatal" />
</filter>
</appender>
Any suggestions would be appreciated. Thanks in advance.