- Your Alibaba Cloud ECS instance and MQ’s server are not in the same region.
- You may have accessed the MQ service from a non-Alibaba Cloud host, and the Topic you created does not support this.
Follow these steps:
- Make sure that the Alibaba Cloud host and the created Topic are in the same region.
- Make sure that the Topic is in the Internet region when accessing MQ from a non-Alibaba Cloud host.