Error 'handshake alert: unrecognized_name' when setting up application links after upgrading Confluence
Platform notice: Server and Data Center only. This article only applies to Atlassian products on the server and data center platforms.
Problem
Application link to JIRA does not work and when setting up application links, the following appears in the atlassian-confluence.log
ManifestNotFoundException thrown while retrieving manifest
com.atlassian.applinks.spi.manifest.ManifestNotFoundException: javax.net.ssl.SSLProtocolException: handshake alert: unrecognized_name
Diagnosis
The error has been reported in Linux environments with Apache proxies after upgrading Confluence from a version using Java 6 to a version using Java 7 or higher.
Cause
Wildcard / multi-domain SSL certificates, when Java has SNI enabled and an Apache proxy is in place.
Resolution
Add the correct ServerName/ServerAlias(ses) to the specific hosts in the Apache configuration as this article describes: https://community.qualys.com/thread/13532
For more detailed instructions, please follow our guide for Proxying Atlassian Server applications