Email Bounces Back with “unrouteable mail domain” Error電子郵件反彈與“ unrouteable的郵件域”的錯誤
At your own mail server provided by the web hosting service, where the mail transfer agent (MTA) is normally Exim or Sendmail, there may be email sending and delivery error where emails include those auto-generated by PHP scripts bounce back to the sender’s account by the MTA itself.在您自己的郵件服務器所提供的網頁主機服務，郵件傳輸代理（ MTA ）是通常的exim或sendmail ，可能會有電子郵件發送和交付錯誤的地方的電子郵件，包括那些自動生成由PHP腳本退回給發件人' s帳戶由MTA的本身。 The problem normally happens during the initial setup of email server, or after you have done some changes to system or web host configuration.這個問題通常發生在初始安裝的電子郵件伺服器，或之後，你做了一些更改系統或網頁主機配置。 And even emails send to well known domains such as Gmail.com, Yahoo.com and Hotmail.com are rejected.甚至電子郵件傳送到著名的域名如gmail.com ， yahoo.com或hotmail.com被拒絕。 The following text message will append to the bounced email:以下文字訊息將附加到退回的電子郵件：
Mail delivery failed: returning message to sender 郵件派遞服務失敗：返回的信息，發件人
A message that you sent could not be delivered to one or more of its一條消息，您發送的無法交付的一個或多個其
recipients.受助人。 This is a permanent error.這是一個永久性的錯誤。 The following address(es) failed:以下地址（安老服務）失敗：
xxx@hotmail.com
unrouteable mail domain “hotmail.com” unrouteable的郵件域“ hotmail.com ”
The unrouteable mail domain error message is a very general error message of mail server which could means a lot of things and possible causes of error.該unrouteable的郵件域的錯誤訊息是一個很一般的錯誤訊息的郵件服務器可以指很多事情及其可能原因的錯誤。 List below is a few common causes and its possible solution.下面的列表是幾個常見的原因及其可能的解決辦法。
If you’re using cPanel, the “unrouteable mail domain” error may occur when MTA hit the limit on the maximum number of e-mails sent out per hour.如果您使用的cPanel ， “ unrouteable的郵件域”的錯誤時，可能會出現的MTA擊中的限制，最多的電子郵件發出每小時。 The setting is configured at Tweak Settings section of cPanel WebHost Manager (WHM).設置是設定在調整設置一節的cPanel網頁主機服務經理（的WHM ） 。 Look for the option of “The maximum each domain can send out per hour (0 is unlimited)”.尋找的選擇“最高，每個網域可以發送出每小時（ 0是無限的） ” 。 As mentioned, set it to 0 for unlimted emails sending.如上所述，將它設置為0 unlimted電子郵件發送。 If you’re using shared hosting, you can change this setting, but you can request support from hosting company or just wait out the hour.如果您使用的共同主辦，您可以更改此設置，但是您可以要求支持從託管公司或只是等待了一個小時。 This limit is in place to curb any spam attacks that might take place on the servers.這個限制是在地方，以遏止任何垃圾郵件攻擊可能發生在服務器。
Another possible cause for “unrouteable mail domain” problem when sending mail generated by PHP scripts is the security feature of the web host and Apache HTTPD PHP module.另一個可能的原因為“ unrouteable的郵件域”問題時，發送郵件所產生的PHP腳本是安全功能的網頁主機和Apache的httpd PHP模塊。 In cPanel, it’s possible to set “nobody” account which Apache is running is not allowed to send emails to remote or external email addresses.在的cPanel ，有可能會訂定“沒有人”的帳戶， Apache是運行是不容許發送電子郵件到偏遠或外部的電子郵件地址。 If the setting is enabled, the MTA will bounce the e-mails if PHPSuexec or/and Suexec is turned off and disabled.如果設置已啟用， MTA將退回的電子郵件，如果phpsuexec和/或suexec是關閉和殘疾人。 The resolution or solution to this problem is to unselect the “Prevent the user “nobody” from sending out mail to remote addresses (PHP and CGI scripts generally run as nobody if you are not using PHPSuexec and Suexec respectively.)” setting in Tweak Settings section of cPanel WHM.該決議或要解決這個問題是要取消“防止用戶”沒有人“從發送電子郵件到偏遠的地址（ PHP和CGI腳本一般運行沒有人如果您使用的不是phpsuexec和suexec分別） ”設置，調整設置一節的cPanel的WHM 。 If you’re on shared hosting server and with no access to WHM, again you have to contact the hosting service provider for support and resolution.如果您對共享主機服務器和無法獲得的WHM ，再次你有聯繫的託管服務供應商的支持和決議。 You can also try to modify the PHP scripts to send emails using SMTP with authentication.您也可以嘗試修改PHP腳本發送電子郵件的SMTP使用與驗證。
The unable to send email problem may also related to DNS configuration error.該無法發送電子郵件的問題，也可能有關的DNS配置錯誤。 The originating mail server for a domain must have an MX record associated with it, which then also need to have a A record in the DNS to resolve to the correct IP address.原始的郵件服務器為網域必須有一個MX記錄，與此相關，然後還需要有一個記錄，在DNS來解析，以正確的IP地址。 Beside, Internet Service Providers require all incoming email to be sent from a server with a reverse DNS (PTR) record.旁邊，互聯網服務供應商，要求所有傳入的電子郵件將被送到從服務器與反向DNS （ PTR ）記錄。 All these DNS records must be correctly defined.所有這些DNS記錄必須正確地界定了。 You can use dig command (for example: dig mx mydomain.com) to verify the MX record, or use third-party websites such as您可以使用挖掘命令（例如：挖的MX mydomain.com ）來驗證MX記錄，或使用第三方網站，如 dnsstuff.com to check for all DNS entries.檢查所有的DNS項目。
The sender’s mail server or recipient’s mail server may also has sender verification turns on, in which if the verification fails, you will have some error like below:發件人的郵件伺服器或收件人的郵件服務器可能也有發件人核查輪流上，在其中如果驗證失敗，你將有一些錯誤如下：
Remote SMTP server has rejected address遠程SMTP服務器已拒絕地址
550-Verification failed for 550驗證失敗
If it’s your own mail server MTA that’s rejecting the email, you can temporarily turn off “Verify the existence of email senders” in cPanel WHM under Exim or Sendmail Configuration Editor in Service Configuration section.如果這是您自己的郵件服務器的MTA認為的，拒絕的電子郵件，您可以暫時關閉“驗證的存在，電子郵件寄件者”在的cPanel的WHM下，進出口銀行或sendmail配置編輯器在服務配置節。 However, the root cause is still related to DNS problem mentioned above as the setting enables check and verify if the MX record of the sender is valid.然而，根本原因仍然是相關的DNS上述問題作為設置，可檢查和核實，如果MX記錄的發件人是有效的。 So if the mail server unable to route the mails to recipients’ MTA and been rejected with the error, you will need to verify the the DNS entries again, although there is slim chance that the receiving mail server is misconfigured.因此，如果郵件服務器無法路線郵件的收件人' MTA和被拒絕與錯誤，您將需要驗證DNS項再次，雖然有渺茫的機會，接收郵件服務器的錯誤。
IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要說明 ：這是一個機器翻譯網頁是“按原樣”提供的擔保。 Machine translation may be difficult to understand.機器翻譯可能很難理解。 Please refer to請參閱 original English article英文原版的文章 whenever possible.只要有可能。
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