Authentication failed because the remote party sent a TLS alert: 'InsuffientSecurity'

[kevinvenclovas]

Describe the bug

Hello,

on my application i connecting to my rabbbitmq hosted on AWS.

factory = new ConnectionFactory()
 {
     HostName = "XXX",
     Port = 5671,
     Password = "XXX",
     UserName = "XXX",
}

This connection works very well on Debug mode on IIS Express. But when i publish my app on my IIS Server on a Windows machine i get following exception:

RabbitMQ.Client.Exceptions.BrokerUnreachableException\r\n\r\nNone of the specified endpoints were reachable\r\n\r\nSystem.AggregateException: 
One or more errors occurred. (Authentication failed because the remote party sent a TLS alert: 
'InsuffientSecurity'.)\r\n ---> System.Security.Authentication.AuthenticationException: Authentication failed because the remote party sent a TLS alert: 
'InsuffientSecurity'.

Someone had this issue too and can help me?

RabbitMQ.Client Version: 6.5.0
IIS Version: 8
Windows: Windows Server 12

Reproduction steps

1. Connect to RabbitMQ via IIS

...

Expected behavior

Connect to RabbitMQ without exception :D

Additional context

No response