Rate limiting and SMTP proxy

Maxim Dounin mdounin at mdounin.ru
Thu Jan 19 13:12:37 UTC 2017


On Wed, Jan 18, 2017 at 05:42:04PM -0500, powellchristoph wrote:

> Hello,
> I was wondering if someone could clarify if the 'ngx_http_limit_req_module'
> would rate limit an smtp proxy. The rate-limiting module says that you can
> use the 'limit_req' within a server context. Would I be able to use it
> within the server context of a mail block? But the 'limit_req_zone' can only
> be declared within an http context.

The ngx_http_limit_req_module is a HTTP module, you can't use it 
in the mail module.

On the other hand, you can use it to limit requests to auth_http 
script, providing essentially the same functionality.

Maxim Dounin

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