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MailSSL


This module ensures SSL/TLS support for POP3/IMAP/SMTP. Configuration is practically identical to the configuration of the HTTP SSL module, but checking client certificates is not supported.
这个模块使得POP3/IMAP/SMTP可以使用SSL/TLS.配置已经定义了HTTP SSL模块,但是不支持客户端证书检测。

ssl

syntax:*ssl*on | off

default:*ssl off*

context:*mail, server*

Enables SSL/TLS for this virtual server.
在虚拟服务器中启用SSL/TLS

ssl_certificate

syntax:*ssl_certificate*file

default:*cert.pem*

context:*mail, server*

Indicates file with the certificate in PEM format for this virtual server. The same file can contain other certificates, and also secret key in PEM format.
显示虚拟服务器上的PEM格式的证书文件。同一文件可以包含其他的证书和包含PEM格式的安全码。

ssl_certificate_key

syntax:*ssl_certificate_key*file

default:*cert.pem*

context:*mail, server*

Indicates file with the secret key in PEM format for this virtual server.
显示虚拟服务器中PEM格式的安全码文件

ssl_ciphers

syntax:*ssl_ciphers file*ciphers

default:*ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP*

context:*mail, server*

Directive describes the permitted ciphers. Ciphers are assigned in the formats supported by OpenSSL.
指令描述了容许的SSL chiphers.chiphers都被使用了OpenSSL支持的格式.

ssl_prefer_server_ciphers

syntax:*ssl_prefer_server_ciphers*on | off

default:*off*

context:*mail, server*

Requires protocols SSLv3 and TLSv1 server ciphers be preferred over the client's ciphers.
需要SSLv3协议,TLSv1 服务器端米阿么优先于客户端密码

ssl_protocols

syntax:*ssl_protocols*[SSLv2] [SSLv3] [TLSv1]

default:*SSLv2 SSLv3 TLSv1*

context:*mail, server*

Directive enables the protocols indicated.
指令显示协议

ssl_session_cache

syntax:*ssl_session_cache*[builtin[:size [shared:name:size]

default:*builtin:20480*

context:*mail, server*

The directive sets the types and sizes of caches to store the SSL sessions.
指令设置了类型和存储SSL 会话的缓存的大小.
The cache types are:
缓存类型为:

  • builtin -- the OpenSSL builtin cache, is used inside one worker process only. The cache size is assigned in the number of the sessions.
    builtin -- OpenSSL内部缓存,这个只在内部工作进程中被使用.这个缓存大小等同于会话的个数。
  • shared -- the cache is shared between all worker processes. The size of cache is assigned in the bytes, 1 MB cache can contain about 4000 sessions. Each shared cache must have arbitrary name. Cache with the same name can be used in several virtual servers.
    shared -- 这个缓存被所有工作进程共享.这个缓存大小用字节标识,1M缓存可以包含大约4000个会话。每个共享缓存都有专有的名称。相同名称的缓存可以被多个服务器使用。

It is possible to use both types of cache simultaneously, for example:
可能同时使用2中类型的缓存,例如

ssl_session_cache  builtin:1000  shared:SSL:10m; 

However, the only shared cache usage without that builtin should be more effective.
然而,共享缓存只有在内部缓存之外使用才能产生更好的效果。

ssl_session_timeout

syntax:*ssl_session_timeout*time

default:*5m*

context:*mail, server*

Assigns the time during which the client can repeatedly use the parameters of the session, which is stored in the cache.
在使用中客户端重复使用的会话参数被存储在缓存中。

starttls

syntax:*starttls on | off | only*

default:*off*

context:*mail, server*

  • on - permit the use of commands STLS for POP3 and STARTTLS for IMAP/SMTP
    on - 容许在POP3中的STLS命令和IMAP/SMPT中的STARTTLS命令
  • off - do not allow command STLS/STARTTLS
    不容许 STLS/STARTTLS命令
  • only - announce STLS/STARTTLS support and require that clients use TLS encryption
    only - 宣布支持 STLS/STARTTLS但是需要客户端使用TLS加密

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