Hi all
We've had some complaints from a customer saying that emails being
sent through Liferay MailServiceUtil are not getting to their
destinations. We thought this was a problem with their mail relay
server, because we have no messages logged about any connection problems.
Still we did some more tests and we found out that Liferay currently
doesn't log anything if the mail server is not responding. We had to
dig deep to find out that the MailEngine logging is turned off.
We have found a workaround for this, by creating a
tomcat\webapps\ROOT\WEB-INF\classes\META-INF\portal-log4j-ext.xml
with the following content:
<Configuration strict="true">
<Loggers>
<Logger level="INFO" name="com.liferay.mail.internal"/>
<Root level="INFO">
</Root>
</Loggers>
</Configuration>
After this, we started getting this message in the logfile:
2024-08-05 16:19:05.573 WARN [liferay/mail-2][MailEngine:437] Unable to connect to a valid mail server. Please make sure one is properly configured: Couldn't connect to host, port: localhost, 25; timeout -1
Anyway, I think it would be better to enable it again, because this
is a bit hard to detect if a server goes down and messages are lost.
HTH
Fernando
