Optimizing nginx mail proxy

[Maxim Dounin]

Hello!

On Tue, Feb 20, 2018 at 02:56:40AM -0500, Azusa Taroura wrote:

> I’m trying to optimize mail-proxy. 
> My performance test is 1 client sends many request to 1 nginx server.

[...]

> Low cpu usage, but the performance result is not good.
> Do yoy know how to take full advantage of nginx?

It is not clear what do you mean by "request", as there are no 
requests in SMTP, and what do you mean by "performance result".

In general, there is no need to optimize anything in nginx mail 
proxy except very basic things like worker_connections and 
ssl_session_cache if you use SSL.  Most critical parts from 
performance point of view are your auth_http backend and your SMTP 
backend.

-- 
Maxim Dounin
http://mdounin.ru/