if you can access the server bypassing the reverse proxy (recommended) you need to configure Jenkins to advertise it's address
https://wiki.jenkins.io/plugins/servlet/mobile?contentId=38929503#content/view/38929503 hudson.TcpSlaveAgentListener.hostName -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/a4f19f9c-5d76-4386-9567-39be7b22ed65%40googlegroups.com.