<Resource name="mail/Session" auth="Container" type="javax.mail.Session" password="xxxx"       mail.debug="false"       mail.smtp.user="xxxx"       mail.smtp.host="smtp.washington.edu"       mail.smtp.auth="true"       mail.smtp.port="465"       mail.smtp.starttls.enable="true"       mail.smtp.socketFactory.class="javax.net.ssl.SSLSocketFactory"       description="email resource"   />

Our System Admin tried the setting on a local tomcat with a new java.mail package. The setting only worked when he changed mail.smtp.user to mail.user. Unfortunately, the latter setting didn't work on the LabKey server.

This problem only seemed to have propped up after we upgraded to the new server. The setting worked for the last version.