Highly likely that you're dealing with an issue related to certificates. If you changed the server names, the self signed certs will regenerate. You can check out the cert propogation to make sure your certs match correct. For example, on the publisher, the publisher tomcat cert should be also in place as the tomcat trust cert for the publisher. On all the other servers, it would be in place as the tomcat trust cert.
Same thing with the ipSec certs.
If the certs are out of whack, you can spend a lot of time chasing this one.