Error 'handshake alert: unrecognized_name' when setting up application links after upgrading Confluence
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
Problem
Application link to JIRA does not work and when setting up application links, the following appears in the atlassian-confluence.log
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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.
Solution
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
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