Merak邮局 SMTP 5xx 错误解析 (来自官网)

Merak邮局 SMTP 5xx 错误解析 (来自官网)

在IceWarp 的日志文件中,你经常能发现一些 SMTP 错误提示, 本 FAQ 将帮助你理解这些提示并提供相应的解决办法.


大多数  SMTP 错误均会附一个简短的说明的解决问题的办法:

编号 En. Code 提示信息 说明 解决办法
500 5.5.1 Command unrecognized 当前 SMTP 命令未被执行或 merak SMTP 不支持. 检查最后一个 STMP 指令的语法并重试.

另一种可能是你正使用 Telnet 方式输入指令,但服务器禁止 Telnet 连接,检查管理员控制台- 邮件服务 -> 安全 -> 高级.

501 5.5.2 Domain name required 发件人没有域名Sender has no domain specified (usually in MAIL FROM) Specify the senders’ domain name and try again.

The problem may be in your e-mail client, not Merak. If your e-mail client is not properly configured with a domain name this could happen.

501 5.5.2 Unbalanced SMTP session syntax invalid. (usually unbalanced brackets) Check the syntax of the last command and the configuration of various DAT files.
501 5.5.4 Syntax error in parameters scanning Common syntax error. You probably mis-typed last command or last string is invalid. Check the syntax of the last command.
501 5.5.1 HELO/EHLO requires domain address Usually when there was blank or invalid string sequence after HELO/EHLO command. Greet Merak SMTP again with correct HELO/ELHO command.
501 5.0.0 Authentication canceled The process of authentication was canceled for any reason. Restart the authentication process by using proper command.
501 5.7.0 Authentication failed The username/password combination provided during authentication was invalid. Reenter both the username and the password and authenticate again.
501 5.7.1   You are not allowed to send. Be sure “Reject if no rDNS” is NOT checked in Merak admin console or

Put the local IP range and your e-mail client IP in the “Relaying from” box.

502 5.5.1 Sorry, we do not support this operation This operation is not allowed. You can allow/disallow particular operations and commands from the Merak admin console: Mail Service – > Security -> Advanced.
503 5.5.1 Incorrect command sequence A supported command was used on invalid place. For example command RCPT TO used before MAIL FROM or DATA command used when RCPT TO command was not accepted. Solution depends on the situation where this error occurred. Check last few commands sequence.
503 5.5.1 Authentication already done Error occurs by re-authentication.  
503 5.5.1 HELO/EHLO command required Greeting error. HELO/EHLO command is required. You have to use HELO or EHLO command. You can specify this option in Merak admin console: Mail Service – > Security -> Advanced.
503 5.5.1 HELO/EHLO already specified Greeting used again.  
504 5.7.6 Unrecognized authentication type Invalid authentication type. Incorrect or none type of AUTH specified. Use the command AUTH with proper authentication type.
530 5.7.1 Authentication required [AUTH] Authentication with command AUTH is required. Use AUTH command or enable/disable authentication obligation from your Merak admin console.
550 5.7.1 We do not relay Server is not open for relay. Read this FAQ.
550 5.7.1 We do not relay, account limits apply   Check the account limits for the particular user account and whole domain.
550 5.7.1 You have rights to send mail to local domains only The user who gets this error is allowed to send mail only to local domains. There is a checkbox in Merak admin console, user account management – Options tab. Enable or disable it.
550 5.7.1 Access not allowed 1) Merak Mail Server block access by a blacklist filter or

2) reject if originator’s domain is local and not authorized option turned on

1) Review Merak B&W filter settings or set a bypass file.

2) Local users have to authorize themselves so if they do not have this set up in their e-mail clients and you turned this on they are not allowed to send.

550 5.7.1 Permission denied    
550 5.1.1 Unknown local user    
550 5.1.1 Unknown user; rejecting Unknown user account. The recipient is not local, thus reject the message. Behavior and the treatment of messages coming to unknown user accounts can be set from Merak admin console – domain management – Domain tab.
551 5.1.1 No such user found 帐户不存在.  
551 5.1.1 No such mailing list found 不是本地邮件列表  
552 5.5.3 Too many recipients 收件人的数量超出允许的最大收件人数量. 老版本的 Merak 根据 RFC 限制最大收件人数量为 100 . 如需使用更多收件人请使用邮件列表,或下载高于  v8.5 以后版本的 Merak 系统 (新的版本支持无限数量的收件人).
554 5.3.4 Message size exceeds fixed maximum message size 用户发送邮件大小超出限制,该用户被限制发送邮件大小. 你能增加或禁用外发邮件大小限制,管理员控制台- 用户帐户管理 - 限制 选项卡. 设置所有3层 (服务器, 域和用户) 的值均为 0. (不限制)
554 5.7.1 Message cannot be accepted, virus found 邮件正文或附件中包含病毒.  
554 5.7.1 Message cannot be accepted, content filter rejection 内容过滤器拒绝该邮件. 检查 Merak 内容过滤器.
554 5.7.1 Message cannot be accepted, spam filter rejection 邮件未被接受,反垃圾过滤器拒绝邮件,邮件可能是垃圾邮件 如果该邮件不是垃圾邮件,请修改你 merak 防垃圾引擎设置.
554 5.7.1 Message cannot be accepted, spam rejection 邮件未被接受,反垃圾引擎拒绝,邮件可能是垃圾邮件. 如果该邮件不是垃圾邮件,请修改你 merak 防垃圾引擎设置.
    Message deleted by filter 邮件被 过滤器删除 更改你的过滤器 配置.
    Message challenged by filter   如果不想使用挑战响应功能你可以在反垃圾设置中禁用. (信任选项卡.)
554 5.2.2   邮件大小超出限制.  
554 5.3.1   邮件大小超出限制.  
554 5.7.1 Message cannot be accepted, filter rejection 信息被过滤器拒绝. 检查你的过滤器设置和配置.



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