[rabbitmq-discuss] I am getting an Error while trying to send messages to a queue. "ACCESS_REFUSED - Login was refused using authentication mechanism PLAIN. For details see the broker logfile."

[Michael Klishin]

On 26 April 2014 at 12:36:16, Scott McFadden (scott.kendall.mcfadden at gmail.com) wrote:
> > Go look at the server log file. If you are using guest/guest,  
> latest RabbitMQ no longer allows guest to connect to anything  
> other than localhost.

Correct, which is mentioned early in the breaking changes blog post: http://www.rabbitmq.com/blog/2014/04/02/breaking-things-with-rabbitmq-3-3/

The old behaviour also can be re-enabled:
http://www.rabbitmq.com/access-control.html 
--  
MK  

Software Engineer, Pivotal/RabbitMQ