Reading this bug report I found an error in my /etc/hosts which resolves the problem here. Thanks.
Using: Ubuntu 10.04 Erlang 5.7.4 RabbitMQ Server 2.5.0-1 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to rabbitmq-server in Ubuntu. https://bugs.launchpad.net/bugs/653405 Title: rabbitmq-server fails to start if hostname is unresolvable or has changed since first starting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/653405/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs