Support » Plugin: WP-DB-Backup » Emailing backups doesn’t work in WordPress > 5.0

  • It looks like using the email options to email backups to a specific email address doesn’t work anymore since WordPress > 5.0. The backup process completes and you get the message that it has been emailed, but no email arrives.

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  • Hi,

    Since August 24th, I updated WordPress (I cannot remember exactly when), I can see errors in Logs for the CRON Tasks at my hosting provider.

    Undefined index: SERVER_NAME

    Then, following some help from some forums, I update my “wp-config.php” file with
    if (!isset($_SERVER['SERVER_NAME'])) $_SERVER['SERVER_NAME']="localhost";

    Now, in the CRON Logs, I can see error :
    Undefined variable: headers

    There is something wrong with the forms field and variable that seem to not be defined by WP-DB-BACKUP since WordPress 5.0 or above

    It’s confirmed. If I disable WP_DB_BACKUP plugin, my CRON Job runs without any error.

    For me, regarding the error Undefined variable: headers
    The error is certainly somewhere below (line 1002) :

    	$headers .= "MIME-Version: 1.0\n";
    	$headers = 'From: wordpress@' . preg_replace('#^www\.#', '', sanitize_text_field(strtolower($_SERVER['SERVER_NAME']))) . "\n";
    	$headers .= "Content-Type: multipart/mixed; boundary=\"$boundary\"\n";
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