用nginx TCP反向代理作mail邮件代理

桃扇骨 2022-06-08 23:27 193阅读 0赞

# 用nginx TCP反向代理作mail邮件代理 #

*  用nginx TCP反向代理作mail邮件代理
    
     *  背景
     *  Nginx安装包括nginx\_upstream\_check\_module
     *  Nginx配置
     *  总结

## 1. 背景 ##

新版本nginx有TCP反向代理功能，nginx的mail proxy配置认证又太麻烦，于是就想用TCP反向功能作mail代理。

## 2. Nginx安装（包括nginx\_upstream\_check\_module） ##

cd /tmp
    tar zxf pcre-8.35.tar.gz
    cd pcre-8.35/
    ./configure --prefix=/usr/local/pcre
    make
    make install
    
    cd /tmp
    tar zxf openssl-1.0.2g.tar.gz
    cd openssl-1.0.2g/
    ./config enable-tl***t
    make
    make install
    mv -f /usr/bin/openssl /usr/bin/openssl.old
    mv -f /usr/include/openssl /usr/include/openssl.old
    ln -sf /usr/local/ssl/bin/openssl /usr/bin/openssl
    ln -sf /usr/local/ssl/include/openssl /usr/include/openssl
    
    cd /tmp
    git clone git@github.com:yaoweibin/nginx_upstream_check_module.git
    
    cd /tmp
    tar zxf nginx-1.13.4.tar.gz
    cd nginx-1.13.4/
    patch -p1 < ../nginx_upstream_check_module/check_1.12.1+.patch
    ./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-stream=dynamic --with-stream_ssl_module --with-pcre=../pcre-8.35 --with-http_ssl_module --with-openssl=../openssl-1.0.2g --add-module=../nginx_upstream_check_module
    make
    make install

## 3. Nginx配置 ##

`cat nginx.conf`

user  www;
    worker_processes  8;
    
    error_log  logs/info.log  info;
    
    #pid logs/nginx.pid;
    
    load_module modules/ngx_stream_module.so;  # 此处要添加模块
    
    events {
        worker_connections  1024;
    }
    
    http {
        include       mime.types;
        default_type  application/octet-stream;
    
        #log_format main '$remote_addr - $remote_user [$time_local] "$request" '
        # '$status $body_bytes_sent "$http_referer" '
        # '"$http_user_agent" "$http_x_forwarded_for"';
    
        #access_log logs/access.log main;
    
        sendfile        on;
        #tcp_nopush on;
    
        #keepalive_timeout 0;
        keepalive_timeout  65;
    
        #gzip on;
    
        #设定请求缓冲 
        server_names_hash_bucket_size 128;  
        client_header_buffer_size 32k;  
        large_client_header_buffers 4 32k;  
        client_max_body_size 300m;  
        #sendfile on; 
        tcp_nopush     on;  
        #keepalive_timeout 60; 
        tcp_nodelay on;  
        server_tokens off;  
        client_body_buffer_size 512k;  
        proxy_connect_timeout   20;  
        proxy_send_timeout      60;  
        proxy_read_timeout      20;  
        proxy_buffer_size       16k;  
        proxy_buffers           4 64k;  
        proxy_busy_buffers_size 128k;  
        proxy_temp_file_write_size 128k;   
        client_header_timeout  3m;  
        client_body_timeout    3m;  
        send_timeout           3m;  
    
    
        gzip on;#开启gzip，节省带宽 
        gzip_min_length  1100;  
        gzip_buffers     4 8k;  
        gzip_types       text/plain text/css application/x-javascript image/bmp application/javascript;     
    
        output_buffers   1 32k;  
        postpone_output  1460;  
    
        limit_rate_after 3m;#限速模块，前3M下载时不限速 
        limit_rate 512k; #限速模块 
    
    
    include vhost/*.conf;
    
    }
    
    stream {
    include stream/*.conf;
    }

`cat stream/mail_pro.conf`

######### TCP 反向代理负载均衡设置 ###############
    upstream mailsmtp_pro {
            server smtp.mxhichina.com:25;
    }
    
    server {
            listen 25; # 对外提供服务TCP监听
            proxy_connect_timeout 5s;
            proxy_timeout 5s;
            proxy_pass mailsmtp_pro;
    }

## 4. 总结 ##

Nginx功能强大，此文也是给想使用TCP反向代理的朋友作个示例参考吧。