Email notification issuehttps://community.appian.com/discussions/f/administration/8881/email-notification-issueHi, We are facing the below issue. We are not to able send any email notification from the application. In Non -Prod it is working fine but in production with the same config it is not working. Could anyone suggest what could be the issue. We have alsoen-USTelligent Community 12RE: Email notification issuehttps://community.appian.com/thread/39456?ContentTypeID=1Thu, 17 Nov 2016 21:28:56 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:e77a82ab-8ea5-4d55-a18b-702fa7533ac9TimI think you should probably have a look at this KB and follow the steps for the custom.properties config (I&#39;m assuming this is an on-premise install?)<br /><a href="https://forum.appian.com/suite/help/16.3/kb/kb-1028.html">forum.appian.com/.../kb-1028.html</a><div style="clear:both;"></div>RE: Email notification issuehttps://community.appian.com/thread/39444?ContentTypeID=1Thu, 17 Nov 2016 16:14:33 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:d62fa646-a0b0-41ca-9d7a-9d35c2d022a0PhilBSeems like a certification issue: Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target<div style="clear:both;"></div>