I installed JIRA and Confluence on two VPS platforms. On the first one, where JIRA is installed, I also added Apache for proxy and created self-signed SSL on that platform for all my subdomains - *.mydomain.com. I also added that certificate to the trusted certificates in keystore on each platform. Everything is working well despite the fact that JIRA cannot connect to Confluence in Application Links. However Confluence can connect to JIRA. The error is "The remote certificate can't be trusted". I'm searching Atlassian documentation and other people cases but everywhere is written to add the certificate to keystore on both platform - and I already done it.