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

1. 背景

2. Nginx安装（包括nginx_upstream_check_module）

3. Nginx配置

4. 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;
}