MessagingException: 501 HELO requires domain address

Solution:

 Dump out the response from executing: InetAddress.getLocalHost().getHostName()

 the host name that was returned did not exist in the /etc/hosts file
So I added the unknown hostname into the hosts file and it worked.

Apparently, Java will use the hostname as configured in /etc/sysconfig/network or /etc/sysconfig/systemid

 

Reference:

http://www.oracle.com/technetwork/java/faq-135477.html#helo

net.schmizz.sshj.userauth.UserAuthException: Exhausted available authentication methods

Using the SSHJ library I encountered the following error:

net.schmizz.sshj.userauth.UserAuthException: Exhausted available authentication methods

It turns out, I need to include the bouncycastle libraries in my class path as well, which can be found here:

http://www.bouncycastle.org/latest_releases.html

You will need the following JARs:

• bcpkix-jdk15on-147.jar
• bcprov-jdk15on-147.jar
• bcprov-ext-jdk15on-147.jar

Liferay this WAR does not contain a liferay-plugin-package.xml file

 ERROR: Liferay this WAR does not contain a liferay-plugin-package.xml file

This error was very misleading

In this case, the issue ending being that upon deployment a database connection could not be established through the plugin on liferay

Once the database configuration was corrected, the portlet WAR deployed successfully

Postgres not asking for password

Problem

After creating a new user with password in postgres and trying to login using the new user, postgres never asks for a password

 Solution

Modify the pg_hba.conf file and change trust to md5, as follows:

local   all         all                               md5
# IPv4 local connections:
host    all         all         127.0.0.1/32          md5
# IPv6 local connections:
host    all         all         ::1/128               md5