PHP 与 SMTP 通信

Question

我有一个邮件应用程序，每天通过 cron 作业发送大约 5000 封电子邮件（大量的帐户文书工作），并且当邮件只发送给一个收件人时工作正常。 问题出现在我们激活密件抄送时，然后应用程序开始发送直到 980-1050 邮件并开始从 smtp 收到 4.5.3 错误（收件人太多）。如果我暂停作业并再次运行 cron，php 进程会得到一个新的 pid，并开始发送 ok，直到达到相同的限制（980-1050 封邮件）；

所以我的问题是：有没有办法重新生成 php 进程 ID？

如果我能够做到这一点，那么应用程序将毫无问题地发送这些邮件。

或者我可能缺少一些后缀配置？

相关部分代码：

/**
* _Send_SmtpData
* Handles the SMTP negotiation for sending the email header and body.
*
* @param String $rcpt_to The 'receipt to' address to send the email to. This is a bare email address only.
* @param String $to The 'to' address to send this to. This can contain a name / email address in the standard format ("Name" <email@address>)
* @param String $subject The subject of the email to send.
* @param String $body The body of the email to send.
* @param String $headers The headers of the email to send.
**/ 

function _Send_SmtpData(&$rcpt_to, &$to, &$subject, &$body, &$headers)
{

    $data = "DATA";

    $this->DebugMemUsage('Trying to put ' . $data);

    if (!$this->_Put_Smtp_Connection($data)) {
        $this->ErrorCode = 12;
        $this->ErrorCodeSMTPEnhanced = false;
        $this->Error = GetLang('UnableToSendEmail_Data');
        $this->_Close_Smtp_Connection();

        $this->DebugMemUsage('Got error ' . $this->Error);

        return array(false, $this->Error);
    }

    $response = $this->_get_response();

    $this->DebugMemUsage('Got response ' . $response);

    $responsecode = substr($response, 0, 3);

    if ($responsecode != '354') {
        $this->ErrorCode = $responsecode;
        $this->ErrorCodeSMTPEnhanced = $this->_GetSMTPEnhancedErrorCode($response);
        $this->Error = $response;
        $this->_Close_Smtp_Connection();

        $this->DebugMemUsage('Got error ' . $this->Error);

        return array(false, $this->Error);
    }

    $msg = "To: " . $to . $this->_smtp_newline . "Subject: " . $subject . $this->_smtp_newline . $headers . $this->_smtp_newline . preg_replace('/^\.(\r|\n)/m', ' .${1}', $body);

    $msg = str_replace("\r\n","\n",$msg);
    $msg = str_replace("\r","\n",$msg);
    $lines = explode("\n",$msg);
    foreach ($lines as $no => $line) {
        // we need to rtrim here so we don't get rid of tabs before the start of the line.
        // the tab is extremely important for boundaries (eg sending multipart + attachment)
        // so it needs to stay.
        $data = rtrim($line);

        $this->DebugMemUsage('Trying to put ' . $data);

        if (!$this->_Put_Smtp_Connection($data)) {
            $this->ErrorCode = 13;
            $this->ErrorCodeSMTPEnhanced = false;
            $this->Error = GetLang('UnableToSendEmail_DataWriting');
            $this->_Close_Smtp_Connection();

            $this->DebugMemUsage('Got error ' . $this->Error);

            return array(false, $this->Error);
        }
    }

    $data = $this->_smtp_newline . ".";

    $this->DebugMemUsage('Trying to put ' . $data);

    if (!$this->_Put_Smtp_Connection($data)) {
        $this->ErrorCode = 14;
        $this->ErrorCodeSMTPEnhanced = false;
        $this->Error = GetLang('UnableToSendEmail_DataFinished');
        $this->_Close_Smtp_Connection();

        $this->DebugMemUsage('Got error ' . $this->Error);

        return array(false, $this->Error);
    }

    $response = $this->_get_response();

    $this->DebugMemUsage('Got response ' . $response);

    $responsecode = substr($response, 0, 3);
    if ($responsecode != '250') {
        $this->ErrorCodeSMTPEnhanced = $this->_GetSMTPEnhancedErrorCode($response);
        $this->ErrorCode = $responsecode;
        $this->Error = $response;
        $this->_Close_Smtp_Connection();

        $this->DebugMemUsage('Got error ' . $this->Error);

        return array(false, $this->Error);
    }

    $this->DebugMemUsage('Mail accepted ');

    /**
     * We got this far, this means we didn't encounter any errors.
     * Cleanup previous error codes and variables since they are no longer relevant
     * with the current process iteration.
     */
    $this->Error = '';
    $this->ErrorCode = false;
    $this->ErrorCodeSMTPEnhanced = false;

    $this->_smtp_email_count++;
    return array(true, false);
}

Answer 1

最后，“bug”出现在另一个函数中，即密件抄送函数；在工作流程的每次调用中，它都不会清理邮件的先前密件抄送副本，而是将它们相加直到达到限制。