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--- formmail.php 2018-11-23 10:12:35.000000000 +0100 +++ formmail-dev.php 2019-04-12 11:03:38.000000000 +0200 @@ -391,4 +391,4 @@ // zusätzliche Header - $header .= "Cc: " . strip_tags($CC) . "\r\n"; - $header .= "Bcc: " . strip_tags($BCC) . "\r\n"; + !empty($CC) && $header .= "Cc: " . strip_tags($CC) . "\r\n"; + !empty($BCC) && $header .= "Bcc: " . strip_tags($BCC) . "\r\n";
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